Aurora Labs is the development company behind Aurora—the EVM blockchain that runs on the NEAR Protocol. We are also the developers of, and integration partner behind, Aurora Cloud—a suite of products that allow Web2 companies to capture the value of Web3.

We invite you to be a part of our team of smart, professional, result-oriented and fun individuals. Join us to help ensure that our business is blooming while we are striving to deliver the best solutions in the crypto world.

We at Aurora Labs are looking to hire a Blockchain/Contracts Developer to work on smart contracts for our Product, Engine and Contracts teams. This is a full-time position that can be done remotely anywhere in the world.

If you are eager to dive into the competing cross-chain ecosystem and would like to work in an energetic environment, surrounded by highly productive and meticulous engineers, we would be happy to see you in Aurora labs!

# Requirements

* Strong knowledge of Solidity.
* Experience with Ethereum ecosystem, smart contract development life cycle and Ethereum development tools (e.g. Open Zeppelin, ethers.js, Hardhat, Truffle).
* Familiar with indexing protocols (ThGraph, Covalent).
* Experienced in DevOps and CI/CD, and deployment systems.
* Experienced in one of version control systems (e.g git).
* Previous experience in the blockchain industry, particularly around the NEAR, Ethereum, Binance Smart Chain, or Solana ecosystems.
* Prior experience deploying and configuring complex smart contract systems to the Ethereum mainnet.
* Extreme ownership mentality - ability to take extreme ownership and full responsibility of tasks and projects.
* Fast learner with a natural curiosity.
* Passionate about blockchain technology.
* Professionalism and quality in work ethic.

# Responsibilities

* Contribute high quality and well-tested Solidity code, including smart contract development.
* Reviewing and auditing (internally) developed smart contracts by other teams.
* Implementing and executing comprehensive unit, integration and fuzzy testing.
* Contributing to the requirements drafting / analysis.
* Assisting in maintaining the product's CI/CD pipeline.
* Communication and collaboration with a fully distributed team.
* Collaborate with Ethereum and being active in the Ethereum engineering forums.

Ethereum

Smart contracts

Solidity

Remote

Blockchain Contracts Developer

Shardeum is building a layer 1, EVM-based, linearly scalable, smart contract platform that provides low gas fees forever while maintaining true decentralization and solid security through dynamic state sharding. Shardeum aims to be a chain capable of onboarding over a billion people to the crypto revolution, while also democratizing accessibility to decentralization.

Shardeum’s mission is supported by prominent Venture Capitalists in the blockchain space, and we are on track to become one of the most widely used and well known smart contract platforms in blockchain history.

We encourage you to browse our website, Litepaper, Discord and YouTube channel to learn more about the project. You can even try downloading our validator software and joining our Testnet.

We encourage people of all backgrounds and experience levels to apply. Your talent and potential is what matters most to us. Shardeum is committed to creating an inclusive culture.

# About The Role:

The Security Engineering team at Shardeum is responsible for delivering the Shardeum Mainnet safely and securely, and furthering the development of the smart contract platform, the consensus layer and the protocol layer. We focus on building scalable, performant, secure and reliable software that can be downloaded by thousands of node operators to actualize the Shardeum network.

We are in search of highly talented, innovative individuals to join our team. If you enjoy solving complex computer science problems, are passionate about what you work on, are a perfectionist who wants to build things the right way - the secure way - and are persistent about finishing what you started, then you're the kind of person we are looking for. You will be working with equally talented and innovative individuals with the goal of building incredible software with the potential to change the world.

# What You'll Be Doing:

* Perform proactive assessments covering infrastructure, secure and resilient architecture, data security (including privacy), identity and access management, application and product security
* Be proactive in identifying potential security flaws in code, designs, and processes, and develop strategies and tactics to resolve and mitigate exposed issues
* NodeJS and TypeScript Code Audit: Conduct security audits on code, discover and address potential security vulnerabilities
* Aid in planning organizational security priorities
* Evaluate application architectures for security related concerns, and consult on mitigation options.
* Develop on-chain security strategies and perform security assessments and threat modeling of various blockchain protocols and smart contracts
* Develop security-related activities in the software engineering process (e.g., threat modeling, secure coding practices)
* Design and develop detection capabilities to detect known/unknown hacks in Web3
* Triage vulnerability reports, work with engineering team to develop fixes
* Prioritize and drive the reduction of discovered security issues, vulnerabilities, and risks
* Development and/or use of Security-Related Tools
* NodeJS and TypeScript Code Analysis: Develop and/or use analysis tools for automatic detection of potential security vulnerabilities
* On-chain Incidents Monitoring: Develop and maintain strategies for detecting on-chain attacks, enabling real-time observation and reporting of potential security events

# What We're Looking For:

* BS/MS in Computer Science or related fields with security research experience
* Experience performing security architecture and design reviews
* Application Fuzzing and auditing experience
* Experience with Web3 security research a plus
* Good communication skills
* Knowledge of common vulnerabilities in different types of software and programming languages, including:
* How to test for/exploit them
* Real world mitigations that can be applied
* Familiarity with vulnerability classification frameworks (e.g., OWASP Top 10)
* Ability to threat model systems/applications/platforms to assess design and find flaws that can be exploited

# We'd Love If You Have:

* Experience with concurrency, parallelism and distributed systems
* Familiarity with the Shardeum / Shardus open source repos 
* Experience with consensus protocols and other blockchains
* Experience with Node.js and TypeScript, or languages like C, C++, Rust or Go
* Experience writing a smart contract on a blockchain
* Experience running a node in a blockchain network
* Knowledge of cryptography
* Experience with networks and operating systems
* Graduated with high academic scores or with honors
* Won or placed in a hackathon(s)
* Ranked highly on competitive coding sites
* Contributed to open source projects
* Written articles or created videos on technical topics, especially related to blockchain
* Read the Bitcoin and Ethereum whitepapers
* Done something extraordinary

# Here’s What Our Interview Process Looks Like:

Depending on calendar availability, from the first stage to the final stage, we do our best to keep the entire process to under two weeks. Our interviews take place via video calls and typically consists of the following stages:

* Internal Recruiter Call (30 to 45 minutes)
* Meet with the Hiring Manager (1 hour)
* Technical Tests (1-3 x 1-2 hours) 
* Culture & Values Interview (1 hour)

Security

Web3

Cryptography

TypeScript

Security Engineer Blockchain

Evmos is on a mission to develop and ship the foundational tools necessary for building the cross-chain applications of the future, freeing developers from the confines of today’s siloed blockchains. Our teams are building for a world where the next million Web3 users are simply regular users. Read our latest manifesto here.

Evmos opens a new frontier for blockchain applications, expanding the functionality of the EVM by enabling cross-chain applications that tap the liquidity and user bases of multiple blockchain ecosystems to provide more unified experiences.

This is an opportunity to join Evmos at a pivotal time on our growth journey. Having just raised $27m in funding from investors including Polychain Capital, Coinbase Ventures and Circle Ventures, Evmos is now poised to accelerate towards our goal of becoming the playground for Ethereum Apps in the Cosmos ecosystem.

# About The Role:

* As our Blockchain Infrastructure Engineer, you will play a vital role within our dedicated DevOps team, defining and implementing strategies to manage and optimise our infrastructure.
* Your hands-on expertise will allow you to implement system infrastructure best practices and create essential guidelines for our developer community. You will also be tasked with constructing automated tools and workflows to bolster our validator community, node partners, and core engineering team.
* This role is a perfect match for someone with solid experience in both DevOps and software development, looking to leverage their skills in a challenging yet rewarding environment.
* As part of our team, you'll have the unique opportunity to collaborate with other engineering teams and engage with projects within the wider ecosystem like IBC, Cosmos, and Tendermint Core teams.

# What You Will Gain:

* Engaging with us provides you with the unique opportunity to deepen your understanding of blockchain technologies. You will delve into the intricacies of smart contracts, utilizing EVM and go-ethereum (Geth), and learn to implement app chains using the Cosmos SDK framework and the Tendermint Consensus Engine.
* Our team, pioneers in teaching the first university-level Blockchain for Developers course at UC Berkeley, are perfectly poised to guide you through this journey. In this role, you will further expand your professional expertise in cutting-edge blockchain technologies and its related fields, such as economics, mathematics, cryptography, and distributed systems.
* This is not just a job, but an opportunity to grow, continually learn, and actively contribute to the exciting and rapidly evolving field of blockchain technology. Your existing skills will be valued and expanded upon, creating a trajectory for professional development that is as unique as it is rewarding.

# Responsibilities:

* Manage the company’s validator node operations across various testnets and mainnets while adhering to internal SLAs and committed KPIs
* Coordinate client upgrades, hard forks, and emergency responses to failures
* Specify, procure, and set up the environment and infrastructure for validator nodes, including monitoring, logging, reporting, and alerting systems
* Design and implement procedures related to validator node operations, such as incident response, key management, change management
* Work closely with the business operations team to align technical operations with business goals
* Establish and refine processes to maximize the value derived from validator operations and minimize loss risks
* Provide training and guidance for other members of the infrastructure team, ensuring round-the-clock node operation
* Document and communicate technical details via open-source documentation
* Collaborate with various internal teams and the wider community to tap into new trends and opportunities highlighted by internal data, blockchain research, and the wider blockchain industry

# Requirements:

* Demonstrated proficiency in English, both written and verbal
* Must be Europe-based - strong preference for Berlin-based candidates
* Minimum of 3 years of experience in a similar role or as a Site Reliability Engineer (SRE)
* Solid expertise in at least one programming language
* In-depth knowledge of blockchain technology and smart contracts
* Experience in managing validator nodes across several testnets and mainnets
* Proven track record of specifying, procuring, and setting up environments and infrastructures for validator nodes
* Demonstrable experience with modern Infrastructure as Code (IaC) tools
* Proven experience with writing and managing configuration manifests
* Expertise in designing and implementing processes related to validator node operations
* Strong understanding of SLAs and KPIs
* Excellent problem-solving skills with the ability to coordinate hard forks and handle emergency responses to failures
* Excellent communication skills with the ability to document and convey technical details clearly
* Experience in training and guiding teams
* Proven history of contributions to open-source projects, excluding minor changes such as README file updates
* Understanding of Byzantine Fault Tolerance (BFT) and Proof of Stake (PoS) blockchains

# Nice to Haves:

* Experience with managing and optimizing performance for bare-metal nodes
* Understanding of modern IT security trends
* Experience in automating routine tasks and processes

Blockchain protocols

Europe

Berlin

Blockchain Infrastructure Engineer

Sismo leverages zero-knowledge proofs (ZKPs) to enable users to aggregate and selectively disclose personal data to apps. Our core product, , is an easy-to-integrate single sign-on (SSO) that allows apps to safely access previously unreachable data. Developers can showcase apps built with Sismo Connect on the .

Founded in 2021 with backing from over 130 of the biggest names in crypto, Sismo operates at the forefront of digital identity, web3 social, and zero-knowledge technology.

Our mission is to equip developers with the tools they need to empower users and unlock their social capital. We're dedicated to the developer community, providing support through easy-to-use libraries to help build the next generation of apps. Sismo was recognized in 2022 when we were featured in Vitalik Buterin’s list of .

When you join Sismo, you'll be part of a crypto-native team driven by a passion for privacy, decentralization, and next-gen technology. Team members are exposed to the best training, conferences, and hackathons the space has to offer. Be part of the future with Sismo.

# Role

As Sismo’s Smart Contract Engineer, you will work on the newest versions of our smart contracts and ZK circuits. In addition, you will maintain Sismo’s Solidity libraries for developers to integrate Sismo.

# Requirements

* 3+ years of experience in software engineering
* 1+ year(s) of experience building and maintaining open-source smart contracts deployed in production
* Experience building with Foundry, Tenderly, and other advanced smart contract development tools
* Experience or strong interest in learning ZK programming languages such as Circom or Noir
* Fluent in English (French is a bonus)

# Nice to have

* Background in mathematics, physics or cryptography
* Interest in web3 social

# Benefits

* Strong incentives (market salary + tokens)
* Remote-friendly
* Participation in some of crypto’s biggest events and conferences
* Become entrenched in the ZK community

Smart Contract Engineer

As a Blockchain Consensus Engineer in the MainNet Team at LUKSO, you'll be working on the core tech of a Layer 1 Blockchain: the consensus layer which is based on the ETH2 Proof of Stake Consensus. You will do so by developing and maintaining network protocols, consensus algorithms and latest achievements in sharding research. You will be surrounded by an experienced team of professionals and learn in a very quick pace to become an expert in the area.

LUKSO is focused on bringing blockchain technology to its next frontier with new tools and standards that will revolutionise the way the world interacts with blockchain. Creators and users will be able to have a seamless Web3 experience with LUKSO's future-proof solutions and we welcome talent around the world to join us in building the most innovative tools for the New Creative Economy.

LUKSO was Co-Founded by Chief Blockchain Architect, Fabian Vogelsteller, author of ERC-20, ERC-725, Web3.js, Mist Browser and former Lead Dapp developer of Ethereum and Marjorie Hernandez, an early blockchain strategist working with Ethereum, IOTA Foundation and world-renowned brands, who also Co-Founded THE DEMATERIALISED.

LUKSO is now being developed by 60+ people around the globe and we are looking for motivated and passionate people who are up to the task of joining us in building out the foundation for the New Creative Economy and the apps that power it.

# In one year you’ll know you were successful if you’ve

* Helped to construct and improve the LUKSO Blockchain consensus (long-term).
* Worked alongside the Ethereum consensus community and help improve the Casper consensus and sharding proposals for the LUKSO Blockchain and the wider Ethereum ecosystem.
* Built relationships with partnering teams, product managers, founders and designers, resulting in better collaboration, aligned roadmaps and confidence.
* Kept on top of Eth2 Development, with proposed hardforks by Ethereum, to ensure our network is fully up-to-date.

# A background like this helps:

* Professional experience and expert knowledge about Blockchain Consensus with Eth1/Eth2 particularly its current status and roadmap.
* Knowledge about Casper FFG Proof of Stake on EVM networks.
* Strong understanding of Blockchain Cryptography, Distributed Systems and Networks.
* Strong ability to communicate among a team of peers and to document your work well.
* Creative and adaptable mindset with the ability to develop solutions off the regular path.
* A demonstrated interest in cryptocurrencies/blockchain/web3 Technology, attending conferences or even being involved with DAOs, with a willingness and eagerness to learn on a daily basis.

# What We Offer:

* Innovation-driven working environment, where you’ll be part of a project that aims to set new standards in the industry and change the world we live in: doc.lukso.tech
* Team lunches and social activities
* Regular in-office health & sporting activities
* Collaborative squads and a flat structure, with a renowned team of industry experts
* Work fully remote CEST +/-6h or from our picturesque LUKSO office located next to the Spree river in Berlin, Germany

Distributed Systems

Germany

Blockchain Engineer

At Seashell, our goal is to make money grow and move freely, for everyone.

Bringing the latest innovations in financial technology, we aim to deliver exceptional products that make it easy to save, grow, and use your money.

Seashell's technology harnesses blockchain innovations to offer market-leading yields at the push of a button, putting more money back into the pockets of our users.

As a Senior Smart Contract Engineer, you’ll work with team members to overcome technical challenges and make key decisions on tooling and architecting features. This is an exciting opportunity to have a strong impact at a fast-growing startup.

Seashell is a U.S based company but the position is fully remote. We hire people from Canada, US and/or internationally with competitive compensation.

# What you'll do:

* Architect, develop and test smart contracts
* Work closely with cross-functional groups to drive company vision forward
* Engineers on the team today:

Use Solidity to develop smart contracts for EVM chains

# About you:

* 3+ years of experience in smart contract engineering
* Enthusiastic about leveraging innovative technologies to solve issues in the modern financial system
* Comfortable working in a fast-paced, agile startup environment
* Experience with Solidity or other smart contract language
* Strong experience in a backend language such as Go, C/++, Rust, etc.
* Understanding of current trends and best practices in smart contract development
* Experience with cloud based infrastructure providers (i.e.: GCP, AWS, Azure, etc.)
* Strong emphasis on testing and security

# Nice to have:

* Experience with modern front end framework, preferably React
* DeFi or traditional finance interest/experience
* Bachelor's degree or higher in computer science or a relevant subject

Senior Smart Contract Engineer

ChainSafe is a leading blockchain research and development firm specializing in infrastructure solutions for the decentralized web. Alongside its contributions to significant ecosystems such as Ethereum, Polkadot, Filecoin, and more, ChainSafe creates solutions for developers and teams across the web3 space utilizing our expertise in gaming, bridging, NFTs, and decentralized storage. As part of the mission to build innovative products for users and better tooling for developers, ChainSafe embodies an open-source and community-oriented ethos.

To learn more about ChainSafe, look at our Discord, GitHub, and website.

# Here’s what you need to know before reading on:

* Our progressive tech stack includes Go, Rust, and TypeScript
* We spearhead ecosystem projects like Lodestar, Web3.js, Forest, and Gossamer
* We are global, remote-friendly, and open to contractors

At ChainSafe, you’ll be part of a team that believes in the community's vital importance and contributes to advancing humanity with open-source and decentralized technology.

# Role Introduction

At Sygma, we are actively seeking an individual who is profoundly engaged in blockchain interoperability, and DeFi protocols and aspires to enrich these domains by merging their functionalities.

As a Solutions Engineer, your primary responsibility will be to architect and implement a variety of protocols utilizing the foundational Sygma interoperability protocol. You will also assist our vibrant community of builders in developing their unique protocols. Your routine tasks will involve conducting extensive research to uncover novel utilization scenarios for cross-chain protocols, which can be constructed atop the existing Interoperability solutions furnished by Sygma.

Moreover, you will play a pivotal role in the evolution of our Sygma interoperability Software Development Kit (SDK), which is geared towards equipping developers with the necessary tools to build their applications. Your expertise will undoubtedly contribute to the sophistication of blockchain applications and redefine the boundaries of what's possible within this emerging technological sphere.

# Responsibilities

* Proactively research a wide range of edge blockchain technologies that are relevant to interoperability technology. Report on your findings on the dedicated technical meetings, and explain the ideas behind them and how they contribute to the overall architecture.
* Implementing PoC to prove the feasibility and usability of different solution ideas
* Play a key role in architectural and design decisions, building toward an efficient bridging solution for networks of different nature
* Play a key role in developing new modules for our interoperability SDK
* Support developers during the development cycles based on research done
* Identify, prioritize, and execute tasks in the software development life cycle
* Write scalable, robust, testable, efficient, and easy-to-maintain code
* Follow the latest security best practices
* Mentor junior engineers and do active code reviews
* Automate tasks through appropriate tools and scripts

# Required Skills

* 3+ years working with blockchain technologies as a developer and 5+ years in total working as a Software Engineer
* TypeScript and Solidity
* Extensive knowledge and practical experience with the EVM and various DeFi protocols, DAO and DAPs
* Be able to proactively dive into the novel territory and share knowledge on what you've learned
* Willing to research new technologies and possibilities for our product. Passion for writing documental reports and solution investigations based on research done.

# Bonus Skills

* Golang or Rust and Substrate framework
* Experience working with the interoperability projects or protocols
* Experience working with IBC protocol and/or CosmosSDK in general
* Understanding of various blockchain low-level protocols and concepts (Data Availability, Rollups, Interoperability, etc)
* Understanding of blockchain underlying cryptography
* Understanding of distributed systems, and peer-to-peer systems

We strongly encourage you to apply even if you don’t fit all the requirements. You don’t have to match all the listed requirements exactly to be considered for this role.

# Hiring Steps

Candidates for this position can expect the hiring process at Chainsafe to follow the order below. Please keep in mind that candidates can be declined from the position at any stage of the process.

* Qualified candidates will be invited to schedule a 30-45 minute screening call with one of our tech recruiters
* Next, candidates will be invited to schedule a 60-minute interview with the Team Lead
* Then, Candidates will be asked to complete a technical task that takes under 4 hours, but we provide up to 1 week to complete
* Last, candidates will be invited to schedule a 60-minute Cultural Interview with the hiring team.

# We welcome your fresh perspectives and ideas

At ChainSafe, diversity and inclusion are more than a statement; equality and accessibility are guiding principles embedded in who we are - and why we do what we do. We recognize the benefits of a diverse team and aspire to embed respect for all people into our culture, values, and day-to-day practices. We encourage women, LGBTQIA+ people, people of colour, and members of any other group underrepresented in the blockchain space (or tech in general) to apply.

ChainSafe is a remote-first company with an international team. We offer opportunities for personal and professional learning and growth, value autonomy and responsibility, and have a results-driven environment, flexible work hours and time-off policy, as well as competitive salary.

Salary will be determined through the interview process after a review of experience, knowledge, skills, abilities, equity, and location, as well as alignment with market data.

Cosmos

DeFi

Senior Blockchain Solutions Engineer

Fuel Labs is building the fastest modular execution layer in the world. You will be working at the bleeding edge of blockchain scalability R&D designing and building robust blockchain full node software powered by a next-generation virtual machine.

# Required Experience

* 5+ years of experience as a software engineer
* Strong proficiency in Rust, C++, or Golang (or other systems language)
* Extensive knowledge of virtual machines or blockchain node software
* Experience developing or designing P2P distributed systems
* Native level proficiency in written and oral English
* Excellent communication skills
* Prior experience working remotely in a globally distributed team

# Bonus

* Experience with financial systems or other high security services
* Solidity/smart contract development
* Consuming and contributing to open source codebases
* Background in philosophy

Rust

Senior Protocol Engineer

# What are we all about?

We are a team of world class builders and researchers with expertise across several domains: Ethereum Protocol Engineering, Layer-2, Decentralized Finance (DeFi), Miner Extractable Value (MEV), Smart Contract Development, Security Auditing and Formal Verification.

Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, StarkWare, Gnosis Chain, Aave, Flashbots, xDai, Open Zeppelin, Forta Protocol, Energy Web, POA Network and many more.

We actively contribute to Ethereum core development, EIP's and network upgrades together with the Ethereum Foundation, and other client teams.

Today, there are nearly 200 of us working remotely from over 45+ countries.

# The role:

We’re seeking auditors and developers with smart contract auditing experience/knowledge to join our team. You'll work on projects written in Solidity and Cairo. Knowledge of Rust and/or GoLang is a great plus. We are looking for someone who understands the Ethereum Virtual Machine, Yellow Paper, and the Solidity language.

You’ll get the opportunity to work at the bleeding edge of Blockchain technology and interact with different teams working in every aspect of Ethereum and StarkNet.

# Responsibilities:

* Work directly with protocols in the Ethereum and StarkNet ecosystems to review their code and help secure their protocols;
* Collaborate with teammates to maintain and continually improve our existing blockchain security tools using modern software engineering practices;
* Develop new blockchain security tools;
* Engage in meetings with clients to discuss security and best practice improvements.

# Requirements:

* 1+ years of experience in Solidity security analysis;
* Solid understanding of the Ethereum Virtual Machine and Yellow Paper;
* Fluency in Solidity development and the deployment of smart contracts;
* Detailed understanding of common smart contract vulnerabilities;
* Fluency with common tools and frameworks used for the development and security analysis of smart contracts;
* Strong debugging skills and/or experience in reverse engineering;
* Basic knowledge of Cairo and Starknet.

# Nice to have:

* Multiple years of prior experience in traditional cybersecurity (before transitioning to the blockchain space);
* Experience in Cairo development;
* Solid understanding of StarkNet;
* Good written and verbal communication skills;
* Understanding of most common DeFi applications.
* A portfolio of blog posts or presentations on DeFi or security-related topics;
* Publicly visible audit reports in your portfolio.

# Perks and benefits:

* Fully remote
* Flexible working hours
* Plus equity

Smart Contract Auditor

* Novel problems and challenging technical tasks in a cutting edge field within the blockchain sector
* Help us build the ultimate cross-chain swapping solution
* Open and friendly office culture with regular informal activities
* Flat(ish) organisation structure with open and collaborative attitudes
* Relocation packages available

Chainflip is a blockchain project that uses multi-party-computation and threshold signature schemes to allow our decentralised validator network to secure assets across multiple arbitrarily differentiated blockchain networks, with the ultimate goal of allowing users to swap between various cryptocurrencies across multiple blockchains in a trustless and composable way.

This is an exciting engineering challenge, one that we’ve been working on for 3 years. It is a multidisciplinary exercise in distributed systems, decentralised finance, blockchain consensus mechanisms, cyber security, applied cryptography, and user facing applications. Our engineering team of 15 is on the lookout for additional people to tackle this challenge with us. We’re mostly office-based in Berlin, Germany, but offer flexible working arrangements and remote work for some part of the year.

# What’s the Job?

This role is open to a European based Senior Full Stack Engineer who wants to work in Web3. Experience in Typescript is ideal, but the role is open to everybody with Full Stack engineering knowledge and an interest in the Web3/Blockchain space.

If you join us, you will likely focus your efforts on several of these three projects depending on your skills and interests:

* State Chain Tooling: we are developing our own standalone blockchain using the substrate blockchain development framework. The Web team has been building out our own custom block explorer and other associated tooling necessary for a fully-featured blockchain project. Previous experience of working with complex type systems would be beneficial here, as would some knowledge of how blockchains work internally.
* The Swapping Interface: We are developing an on-chain trading system that requires the development of advanced web-based quoting systems that plug into real-time on-chain data and other data sources to quote prices and relay user intents to our blockchain.
* Scalability and Security projects: We need to develop a robust system for algorithmically detecting abuse of open web services called Brokers on our network.
* No matter which project you work on, you will be exposed to all of the tough problems and trade-offs that decentralised finance and blockchains have to offer.

# About the Rest of the Company

We are a Berlin-centric team with our own office space in the heart of Kreuzberg, but we have remote workers in a couple of countries in Europe, a new office in Dublin, and a team in Melbourne, Australia. We meet up as a whole team once a year, have a very open and flexible culture, and enjoy meaningful personal connections with one another. Our team has a diverse range of backgrounds and experiences to share, and hopefully you'll be able to share yours with us too.

The Web team itself is composed of four brilliant young engineers with plenty of experience working with our technologies already.

We offer all Berlin based employees standard employment contracts under German law. Those that work with us remotely outside of Germany are typically contractors. On top of that, there are benefits for public transport, gym memberships and personal development like language courses.

# Who Should Apply?

This is the role for you if you:

* Are based in Europe and are willing to relocate to Berlin
* Have 4+ years of professional full stack development experience
* Are interested in decentralisation and blockchain technology
* Have knowledge or experience with building and scaling systems
* Looking to push the boundaries of your knowledge in Web3

Salaries and Token packages on offer are commensurate with skill and experience. Please indicate your expected salary range when applying, and we will take that into consideration during the interview process.

Blockchain

Senior Full Stack Engineer For Web3

GamesCoin is looking for a passionate Smart Contract Developer (Solidity) (f/m/d) who enjoys working in a creative environment. If you are looking for a challenge in programming demanding, exciting and highly individual products, then we are looking for you! The ideal candidate should have solid smart contract proficiency, a keen understanding of financial concepts, and a consistent track record of solving critical engineering problems. Join our Team and be part of our history  helping us to go new ways and uncharted territories!

* Drive high-level decisions about our smart contract architecture
* Write well-documented, performant, clean and re-usable Solidity code
* Collaborate with designers, frontenders and other developers
* Work at a rapid pace with a large amount of ownership and autonomy 
* Performing code reviews to ensure quality

# YOUR PROFILE

* At least three years experience as a Software Developer
* You have 2+ years experience as Solidity Smart Contract Developer
* You have an advanced knowledge of Git, GitHub, TypeScript, Hardhat
* You have significant experience writing comprehensive smart contract test suites
* You have a strong working knowledge of Solidity design patterns and Solidity security best practices
* You have an in-depth knowledge of economics, finance, and the financial sector
* Great understanding of blockchain development for an Ethereum based Network
* Experience with solidity and other Web3 related technologies

# WHY US?

* We offer you a flexible working model. You will work remote or in one of our modern offices in Berlin, Hamburg or Frankfurt Main, which boasts a café, communal rooms & gaming lounge
* You will be a member of an experienced, helpful team in a challenging environment with flat hierarchies and leading-edge technologies
* We offer you a wide variety of tasks with a high level of individual responsibility and the opportunity to contribute your strengths and ideas with a great degree of creative freedom
* We want to achieve great things with your help and offer you a permanent employment contract
* Various benefits such as meal vouchers & sports allowance

Smart Contract Developer

Clutchy is an industry-leading Gaming and NFT marketplace on the SUI blockchain. As the first official marketplace partner of Mysten Labs, Clutchy works closely with all of the ecosystem's leading projects. Clutchy is home to an ambitious, cohesive, and high-achieving team that has exceeded all expectations since its inception with its dedication to innovation.

# The Role

We’re looking for an experienced Rust Developer.

# You will:

* Join the full life cycle of blockchain and related software development, including requirement gathering, design, coding, testing, deployment, documentation, and support
* Focus on core blockchain infrastructure, including relevant services, frameworks and libraries
* Contribute creativity and insight to solve both technical and business challenges
* Be involved with the development of DApps and tools
* Get experience in setting up and running blockchain nodeS

# Requirements

* 3+ years of professional experience in Rust
* Solid knowledge in computing theory including data structures, algorithms, database theory, and networking
* An ability to learn quickly and hit the ground running on a complex software project
* Verbal fluency in English
* Execution of open-source projects on known blockchain platforms such as Solana, will be a bonus
* Interest and enthusiasm for crypto markets, blockchain technology, decentralized finance, and the whole Web3 ecosyste

# Benefits

* Competitive salary + equity/tokens
* Remote work in a dynamic, fast-growth Web3 startup
* Flexible working hours
* Opportunity to work with a diverse, global, and passionate team
* Collaboration with leading projects and thought leaders in the crypto space

Solana

Rust Developer (Web3)

We’re looking for an experienced software engineer to join the team responsible for Hardhat - our flagship product (5.7k stars on GitHub). Hardhat is a development environment for Ethereum software. It consists of different components for editing, compiling, debugging, and deploying smart contracts and dApps, all working together to create a complete development environment.

This is a fully-remote role, and we’re open to candidates applying within UTC-3 to UTC+4 timezones.

# There are two challenges that we focus on:

As Ethereum continues to evolve, we are dedicated to continuing to support the ever-changing developer needs by keeping Hardhat at the forefront of innovation and up-to-date

With Hardhat’s user base growing rapidly (70-100K MAU), we see every bug report and feature request as an opportunity to improve and deliver an exceptional experience. By staying on top of these challenges, we are constantly raising the bar for ourselves and inspiring others to do the same.

In this role, you'll have the opportunity to work closely with our Hardhat Team Lead to create cutting-edge functionality, eliminate bugs, and provide solutions for any issues that arise. You'll play a vital role in upholding our commitment to open-source software by actively contributing to the repository and collaborating with fellow developers, listening to feedback, and incorporating new ideas into our codebase, ensuring our software remains relevant and impactful. Through your efforts, you'll help us maintain our reputation for excellence and inspire others to join us in our mission.

# The skills we look for:

* Familiarity with the Ethereum ecosystem is required, as Hardhat is a key component of Ethereum developer tooling. Understanding how its different parts fit together is important for making sound technical decisions and tackling challenges effectively
* At least 5 years of experience as a software engineer
* Prior experience with dApp or Solidity development
* Knowledge and experience with Node.js and TypeScript
* We work remotely and mostly asynchronously, so the ability to take ownership and work with minimal direction is crucial
* Prior experience working in a remote and globally-distributed environment

# Tech stack:

* TypeScript
* Node.js
* Ethereum / EVM
* Solidity
* Ethers.js

# The advantages you can attain from this opportunity:

* You’ll have a chance to work on a core component of the Ethereum stack and support the entire Ethereum ecosystem to be more productive
* Contribute to Ethereum as a project
* Service the needs of high-profile projects that use Hardhat
* All of your work will be open-source, and you’ll have the chance to collaborate with other open-source projects (both inside and outside Ethereum)

Node.js

Ethereum Tech Lead

Erigon is an Ethereum (also Gnosis Chain and Polygon) Execution Layer on the efficiency frontier. It's written in the Go programming language. We've been innovating in space- and time-efficient ways of doing blockchain execution and data. Further information about Erigon is available at https://erigon.substack.com. 

We are looking for talented software engineers capable of handling complex algorithms and data structures. If you enjoy solving challenging technical problems and want to scale blockchain to billions of users, this is a perfect opportunity!

# Main requirements:

* Grasp complex technical topics such as Ethereum protocol changes (e.g. EIP-1599) as well as data structures non-specific to blockchains (e.g. Roaring Bitmaps).
* Implement new features in code (e.g. EIP-6780).
* Familiarize yourself with our testing and diagnostics tools.
* Use and enhance those tools to investigate and fix devnet and production issues.
* Attend calls with other blockchain core developers (e.g. Ethereum or Gnosis chain calls) if necessary.
* Persevere through a somewhat messy code base and ultimately simplify and improve it.

# WHO YOU ARE

* Desirable, but not mandatory requirements:
* Computer Science/Maths education
* Solid track record as a programmer
* Blockchain (esp. Ethereum) knowledge
* golang proficiency

# WHAT WE CAN OFFER YOU

* Erigon will provide you with help and guidance, as well as sufficient time to learn, so that you can effect complex code changes productively. At the same time, we expect you to be proactive with your tasks and work independently, asking colleagues for assistance when necessary. Ultimately, you should be able to deliver without being micro-managed.
* Flexible working hours. Virtually no mandatory team meetings.
* Flat hierarchy with zero bureaucracy. Erigon's founders are software engineers.
* Opportunity to work on challenging programming, algorithmic, or cryptographic problems on the bleeding edge of what is technically possible.

# ABOUT US

The Gnosis mission has always been centered on building decentralized infrastructure for the Ethereum ecosystem. When Gnosis was founded in 2015, it focused on building prediction markets to enable worldwide access to accurate information. While creating the prediction market platform, it became clear that Gnosis needed to build the infrastructure required to support it.

As a DAO, Gnosis uses the products that it creates to transparently guide decisions on the development, support, and governance of its ecosystem.

Gnosis Safe (multisig and programmable account), Cow Protocol (formerly CowSwap and Gnosis Protocol), Conditional Tokens (prediction markets), Gnosis Auction, and Zodiac (standard and tooling for composable DAOs) are all products incubated by Gnosis. Their success is demonstrated by the recent spin-out of Cow Protocol and the formation of SafeDAO. By combining needs-driven development with deep technical expertise, Gnosis has built the decentralized infrastructure for the Ethereum ecosystem.

In November 2021, the xDai and GnosisDAO communities voted to combine their vibrant ecosystems to create the Gnosis Chain. Gnosis Chain uses the xDai token. It is the associated execution-layer EVM chain for stable transactions and includes a wide-ranging group of projects and users.

Gnosis Chain is secured by a diverse set of validators. With over one hundred thousand validators and counting, we’re building a resilient and neutral network open to anyone without privilege or prejudice. Be a part of a team leading the web3 movement.

Blockchain Core Developer

At Telnyx, we’re architecting and amplifying access to global connectivity. We power communications, wireless, networking and storage from our private, global, multi-cloud IP network all the way out to the hyperlocal edge. And we make this edge infrastructure easily available through intuitive APIs housed in one space.

We’re interested in solving real-world problems, modernizing the antiquated and automating the manual. In building solutions that make connectivity simple and accessible, we’re laying the foundation for a future of endless innovation and interconnected technology. Our shared vision is a future where people, devices and applications can seamlessly connect across the globe.

# About you

As a Solidity Engineer for our Filecoin Project, you will be a crucial member of the team responsible for designing and implementing smart contracts for our Filecoin project.
 
# The Opportunity

* Design, develop, and deploy Solidity Smart Contracts on the Filecoin network utilizing Filecoin Virtual Machine with a focus on reliability and security.
* Assist in the planning and creation of the tokenomics to ensure the success and longevity of the project.
* Maintain high standards for architecture and optimization while creating new features that will drive our platform forward.
* Work closely with other engineers and leaders to specify and develop new tools and features for our product.
* Identify and overcome technical and production obstacles, while generating innovative solutions to ensure the success of our project.
* Stay up-to-date with the latest developments and best practices in the blockchain industry.

# Who we're looking for

* Bachelor's degree or higher in Computer Science or related engineering discipline.
* Hands-on experience in one or more of the following blockchain technologies: Ethereum, Filecoin, dApps, web3.js
* Deep knowledge of Solidity, Filecoin Virtual Machine, Tokenomics, Javascript, Solidity Security Best Practices
* Experience in the development and deployment of smart contracts.
* Familiarity with Docker, Kubernetes, AWS, Terraform, and other relevant tools.
* Passionate about blockchain infrastructure and development.
* Strong knowledge of building blockchain applications at scale is a plus.

JavaScript

Solidity Engineer

The Fabricant is a Digital Fashion House leading the Fashion industry towards a new sector of digital-only clothing that is sustainable, equitable and web3 ready. We have made a name for ourselves in photo-real 3D Fashion Design and Animation and our work operates at the intersection of Fashion and Technology; creating digital-only couture and experiences that are always digital, never physical.

We are seeking an experienced Head of Engineering to lead our Development team in building our “Studio” platform and implementing new features into production. The ideal candidate will have a strong technical background and proven leadership skills to manage a team of Software Engineers and deliver high-quality software products. The Head of Engineering will work closely with the CTO, Product team, Business Development, and other stakeholders to ensure the Development team is always aligned with the company's goals and objectives.

# Responsibilities:

* Manage and lead a team of Software Engineers to deliver high-quality scalable software products on-time and within budget
* Define and implement software development processes, standards, and best practices for web app development and web3 integration
* Collaborate with cross-functional teams to identify business requirements and technical feasibility of new features and products
* Provide technical leadership and guidance on software design, architecture, and development methodologies, with a focus on React for Frontend and AWS Cloud for the Backend
* Continuously monitor and assess the team's performance, skills, and capacity to ensure they are meeting or exceeding expectations
* Identify and recruit top engineering talent as needed to support the growth and expansion of the Development team
* Establish and maintain relationships with external partners, vendors, and contractors for specialized services and support as needed
* Work with the executive team to create a technology roadmap that aligns with the company's strategic goals and objectives, with a focus on creating scalable and reliable architectures
* Stay up-to-date with emerging technologies and trends in web app development and blockchain, and recommend adoption of new technologies and tools to improve development productivity and efficiency

# Job requirements

* 10+ years of experience in software engineering and web application development, with a focus on full-stack development
* 5+ years of experience in leading and managing software engineering teams
* Strong technical skills and experience with web application frameworks such as React, and AWS for the backend, as well as blockchain technologies (Ethereum, Flow)
* Experience in building platforms that manage media assets, ensuring they are scalable, reliable, and user-friendly. Large scale e-commerce websites are a plus
* Excellent communication and interpersonal skills, with the ability to communicate complex technical concepts to non-technical stakeholders
* Strong problem-solving and analytical skills, with the ability to identify and resolve technical issues
* Proven track record of delivering software products on-time and within budget
* Experience in Agile development methodologies, and knowledge of project management tools such as Jira

In addition to the exciting opportunity to work with cutting-edge technologies, the Head of Engineering will have the opportunity to work in the digital fashion industry, a fast-growing and innovative area that is transforming the way people create their own identities in the digital world.

The Fabricant is at the forefront of this revolution, and we are looking for talented individuals who are passionate about fashion and technology to join our team. We offer a competitive salary, flexible working hours, and a dynamic work environment with opportunities for growth and career advancement.

# Why The Fabricant?

* We were one of the first digital-only Fashion houses; disruption and revolution are in our blood
* We are creative + curious; from Fashion Design to VFX to Crypto Tokenomics, we are home to a wildly diverse set of skills & talent
* All that we do centres around our 3 values: collaboration, empathy + fun
* We are helping to ready the metaverse by building a B2C platform that is sustainable, equitable and sexy
* We are scaling fast and helping to ready the metaverse for wider adoption 
* Helping to realise a diverse web3 industry is our passion

# Benefits & Perks:

* 25 days of holiday
* 1 extra day of holiday added for every year of service up to an additional 5 (so 30 in total)
* Wellbeing days to be used on days when someone is not sick but simply needs a day to rest when they are not feeling their best
* 3 days a year dedicated to volunteering opportunities of their choice
* Your birthday off assuming it falls on a working day
* The office is closed between Xmas and NY with no impact to Holiday Allowance to allow for a dedicated stretch of rest
* Remote working
* Flexible working
* ESOP options (allocation TBC)
* Mental Health support as and when needed with external professionals
* 8 weeks of paid Sabbatical Leave after 5 years of service
* Much more in the pipeline as we grow :)

React

Head of Engineering (Web3)

# Responsibilities

* Write Solidity smart contracts, scripts that deploy and interact with smart contracts
* Set and maintain efficient and secure development processes, ensuring the speed of development meets our goals without compromising on security
* Work extensively on the security of GammaX solidity smart contracts through audits, testing, formal verification, q/a, etc.
* Support various engineering and product teams to help build out and develop GammaX
* Collaborate proactively with the rest of the GammaX family to transform novel ideas into game changing DeFi products
* Must be willing to carry out various engineering and product-related tasks as needed by leadership

# Qualifications

* 4+ years experience writing high quality smart contracts in Solidity or another language
* 5+ years experience in software engineering developing in another programming language
* Experience with designing, testing, review, deployment, and interactions with smart contracts that hold funds
* Deep understanding of EVM and broad DeFi ecosystem
* Must be able to write scalable code that is clean and coherent
* Knowledge of Ethereum or other scaling solutions

Senior Blockchain Engineer

We are the fastest growing RWA Tokenization protocol, growing 2000% in the last 30 days. We are also the fastest growing stablecoin 11,000% in the last 30 days.

Our TVL is currently $8,000,000+

Come and build the future with us.

We are looking for a Senior Solidity developer to help us build borrowing and launch V3 of our stablecoin USDR.

You will be responsible for co-architecting and developing key peices of the product alongside our Co-founder and CTO.

You should have 3+ years experience developing smart contracts in solidity. You should have extensive experience and knowledge of DeFi. You should be well versed in smart contract security and the latest exploits.

We are a small and nimble team, that likes to move fast. Although we move fast security and keeping user funds safe is our top priority. We care deeply about building systems that can positively impact the world.

If that sounds like you then please apply :)

Senior Solidity Architect

As a Senior Solidity Software Engineer, you will help Tokemak build the future of liquidity infrastructure within Web3/crypto.

# Responsibilities

* Develop and deploy smart contracts on the Ethereum blockchain using Solidity
* Assist with the architecture and design of advanced DeFi centric smart contracts
* Write and maintain tests using the Foundry toolkit to ensure the reliability and efficiency of the smart contracts

# Requirements

* 2+ years Solidity experience, including deploying contracts to mainnet
* Deep understanding of the Ethereum Virtual Machine, including gas optimization tradeoffs and security best practices
* Experience building in DeFi, managing a protocol with significant TVL is a plus
* Interested in Ethereum research and trends including L2s and ZK rollups
* Familiarity with the Foundry toolkit, or similar framework

Senior Solidity Software Engineer

Founded in 2015, OpenZeppelin is the premier crypto cybersecurity technology and services company, trusted by the most used DeFi and NFT projects in the world.

Our mission is to protect the open economy, safeguarding tens of billions of dollars in funds for leading crypto organizations including Aave, Coinbase, Compound, Ethereum Foundation, TheGraph and many others.

The OpenZeppelin team, spread across 30+ countries in the world, is responsible for creating the most popular Open Source Library for Smart Contract development in the world with over 15 million downloads! The expertise we've built along the years allowed us to uncover major security vulnerabilities for some of the most well known players in the market.

With the success of our products, our security audit work, and the open source educational efforts, we are setting the industry standards for secure systems of a hyper-fast-growing industry and we're looking for more folks to help us on our mission.

This opening is for a Security Researcher role within the company. If you would like to build and maintain the contracts library, Defender or any of our products, consider the product development openings.

# What you'll be doing

* Review smart contracts for the top decentralized applications before they get launched and present findings and vulnerabilities that the protocol can have to the client.
* Team up with one or two auditors and review code line by line and try to hack it.
* Working on proposals to make code easier to understand and use in the future by sharing good practices
* Conduct open-ended research around cutting edge blockchain technologies.
* Paid time to conduct research and contribute to OpenZeppelin’s projects and knowledge

# You have

* Hands-on and practical experience in one or more of the following areas: software development, cyber security, mathematics.
* Experience with public Ethereum or other EVM-based blockchains.
* Knowledge in the Solidity programming language.
* Intellectual curiosity and the capability to learn complex topics
* Above-average attention to detail skills.
* The ability to work independently, with minimal supervision.
* An advanced English level and great communication skills (oral and written).
* Passion about the blockchain space and decentralization.
* Ability to work collaboratively in a distributed team.

# Nice to have

* Experience in Back-end programming using JavaScript, Python, Golang or Rust
* Experience performing code reviews.
* Experience in financial engineering and/or capital markets microstructure

# Logistics

Our interview process takes place on Zoom and tends to consist of the following stages:

* Recruiter call (45 minutes)
* Hiring Manager call (45 minutes)
* Team member interview (1 hour)
* Leadership call (30 minutes)
* Paid work test (lasting up to 10 days)
* Reference checks
* Please let us know if you require any accommodations for the interview process, and we’ll do our best to provide assistance.

# Benefits

* Unlimited holidays
* Fully remote: your way of working
* Paid parental leave & benefits for primary or second caregiver
* Team events: onboarding tour & company retreats in different locations around the world
* Work from home office equipment stipend of up to $500 USD
* Monthly allowance for wellness activities
* Coworking: access to a coworking space of your choice 
* Learning: technical training; spoken language lessons in any language of your choice (using Italki)
* Working with a global team in a fast-growing industry

Blockchain Security Researcher

Binance is the global blockchain company behind the world’s largest digital asset exchange by trading volume and users, serving a greater mission to accelerate cryptocurrency adoption and increase the freedom of money.

Are you looking to be a part of the most influential company in the blockchain industry and contribute to the crypto-currency revolution that is changing the world?

BNB Chain is an EVM-compatible blockchain with over 1,000 dApps deployed and over 1m daily active users (addresses). We are looking for a Chief Architect for our tech-driven ecosystem. The successful candidate will join the innovative and rapidly evolving field to build a new era of crypto-powered applications.

# Job Description

* Researching and building blockchain protocols, modules, technologies and algorithms.
* Preparation of detailed design documents and testing strategies according to requirements.
* Promoting technical experience sharing within the team.
* Work with partners on blockchain integrations and solutions.
* Support the community through the best communications and documentation.

# Qualifications

* Qualifications in Computing/Mathematics/Electronic Engineering or other relevant fields preferred.
* An ability to learn quickly and hit the ground designing, architecting, and developing a complex software project.
* Proficiency in Golang, Rust, C++, Java, and other mainstream blockchain development languages.
* Solid knowledge in computing theory including networking, data structures, algorithms, database theory, and networking.
* Existing track record of R&D and execution of open source projects on known blockchain platforms such as Ethereum and Bitcoin is a great plus.

# Additional Information
 
* Do something meaningful; Be a part of the future of financial technology and the no.1 company in the industry
* Fast-moving, challenging, and unique business problems
* International work environment and flat organization
* Great career development opportunities in a growing company
* Possibility for relocation and international transfers mid-career
* Competitive salary
* Flexible working hours, Casual work attire

# Working at BNB Chain Innovation

* Do something meaningful; Be a part of the future of finance technology and the leading company in the industry
* Fast moving, challenging and unique business problems
* International work environment, flat organization, flexible working hours
* Great career development opportunities in a growing company
* Possibility for relocation and international transfers mid-career
* Competitive salary

BitCoin

Senior Blockchain Developer

Many in the crypto community believe that sovereign chains communicating freely with one another is the future for crypto infrastructure, and that now is the right time to move in that direction. 

Saga's mission is to give developers what they need to build the next 1000 chains in the multichain metaverse, or multiverse.

We are a protocol for automatically provisioning application-specific blockchains in the multiverse. We are rearchitecting developer and end user interactions with blockchains. Using shared security, innovations in validator orchestration, and an automated CI/CD deployment pipeline standardized across apps in single tenant VMs, Saga makes launching a dedicated blockchain, or chainlet, as easy as deploying a smart contract.

Saga’s initial focus will be on gaming and entertainment chains. As the metaverse expands, performance requirements and end user expectations are climbing higher and higher, and crypto-based applications have to deliver. 

Our vision is ambitious, and we need the smartest and most determined engineers to join us on our journey. We are a world class team of veteran web3 entrepreneurs and builders from Ignite (Tendermint), Apple, Twitter, NVIDIA and Skuchain, and we’re looking to grow.

We offer a flexible, remote working environment. You can expect a warm welcome from a friendly and international team that will support you in your personal and professional growth. This is an exciting opportunity to take an active part in the blockchain space and contribute to the decentralization of the future.

# The Work

* Design, document and implement quality backend architectures, services and tooling that leverage the Cosmos technology stack, infrastructure providers, cloud orchestration and more.
* Developing Cosmos SDK modules for genesis coordination, shared security, multiple VMs support, etc
* Gain a holistic view of our blockchain product and to participate in the realization of that broader product from the user to the block.
* Develop high-quality, performant, modern, clean and readable code within tight deadlines.

# Must Have

* 4+ years of software engineering experience.
* 2+ years experience working with Golang.
* A strong grasp of computer science fundamentals including network, storage, OS, data structures, compilers, etc.
* Experience working in an agile development environment
* Proficient in spoken and written English

# Nice to Have

* Experience building with Cosmos SDK, CosmWasm, Tendermint Core.
* Experience in creating microservices, working with tools like Kubernetes, Ansible, Docker, Terraform.
* Experience with optimizing program processor and memory utilization.
* Interest in topics such as proof-of-stake, consensus algorithms, decentralized exchanges, public-key cryptography, etc.
* Contribution to open-source projects

# Benefits

* Work Remotely from anywhere in the world.
* Work on exciting things. The world of crypto is our playground!
* Flexible working hours
* Flexible vacation policy
* Competitive Salary
* Stock options
* Full benefits

Agile

Blockchain Infra Engineer

We are a team of world class builders and researchers with expertise across several domains: Ethereum Protocol Engineering, Layer-2, Decentralized Finance (DeFi), Miner Extractable Value (MEV), Smart Contract Development, Security Auditing and Formal Verification.

Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, StarkWare, Gnosis Chain, Aave, Flashbots, xDai, Open Zeppelin, Forta Protocol, Energy Web, POA Network and many more.

We actively contribute to Ethereum core development, EIP's and network upgrades together with the Ethereum Foundation, and other client teams.

Today, there are nearly 200 of us working remotely from over 45+ countries.

# About the Role

We are looking for a self-starter and growth-minded Staff Software Engineer to help develop Juno (StarkNet Golang Client). StarkNet is a permissionless decentralised ZK-Rollup operating over Ethereum enabling any dApp to achieve unlimited scale for its computation. You will be the core developer of the StarkNet ecosystem collaborating directly with StarkWare and other clients’ core developers impacting its architecture and infrastructure.You will be designing and implementing a StarkNet Client in Golang which will include the following:

* Efficient storage and retrieval of StarkNet state
* P2P layer and performant synchronisation mechanisms
* Data access layers, such as JSON-RPC
* Communication with Ethereum for state verification

# Requirements

* 6+ years of Software Engineering experience
* 2+ years of experience in Blockchain Protocol experience
* Passion for inner workings of Blockchain systems
* Strong programming ability and knowledge of Data Structures and Algorithms
* Robust design and architectural experience
* Experience with Software Testing and release management

# Nice to Have

* Extensive Golang experience
* Distributed networks (P2P)
* Performance and memory optimisations
* Blockchain / EVM / TransactionPool / JSON RPC
* Complex data structures for example; Patricia\Merkle/Verkle tries
* NoSQL Key Values databases for example; RocksDB
* Cryptography

# Perks and benefits:

* Fully remote
* Flexible working hours
* Plus equity

As a Solidity Engineer, you will help us design and deploy our next generation of smart contracts. You will work closely with engineering leads, and partners to prototype smart contracts that extend our core architecture as well as lead efforts to upgrade and optimize our contracts running on EVM based networks. The goal is to create a suite of smart contracts that make up the Safe protocol, bringing the best UX and maximum flexibility to our users. Security is critical, so a strong attention to detail is a must.

Location: Berlin, Germany

Our Tech Stack: Solidity, Hardhat, Typescript

# What you will be doing:

* Develop smart contracts for the Safe protocol
* Iterate on existing smart contracts (e.g. core contracts)
* Evaluate and idea value capture opportunities on contract level
* Support external developers on contract usage (e.g. StackExchange)
* Document the Safe protocol approaches/ solution
* Collaborate with product team (Engineers, designers, stakeholders) on protocol/contract related features

# What you will bring:

* Experience with modern Solidity stack (hardhat, truffle, various plugins, package managers, linters, code cov etc.)
* Experience debugging and simulation of contract interaction with local nodes (e.g. hardhat and ganache,
* Proven experience with different Ethereum development platforms (e.g. Remix, Tenderly, OpenZepplin)
* Experience with Solidity libraries (e.g. Remix, Tenderly, OpenZepplin)
* You have worked on the projects that have been audited
* Testing knowledge (coverage, automation, integration)

# Nice to have skills:

* Expert in EVM details/design
* Deep knowledge in Ethereum RPC usage
* Familiarity with tokenomics
* Typescript for testing

Truffle

Senior Solidity Engineer

Reddit is a community of communities where people can dive into anything through experiences built around their interests, hobbies, and passions. Our mission is to bring community, belonging, and empowerment to everyone in the world. Reddit users submit, vote, and comment on content, stories, and discussions about the topics they care about the most. From pets to parenting, there’s a -community for everybody on Reddit and with over 50 million daily active users, it is home to the most open and authentic conversations on the internet.

The RedditX team is among the most innovative, forward-looking teams at Reddit. We are a fast-moving and entrepreneurial organization within Reddit, dedicated to building new monetizable experiences that users and communities love. With our track record of rapid execution and experimentation, we have been doubling revenue steadily year-over-year. Today, the X org is responsible for established products like Avatar, Premium, Awards, Talk, Powerups, and more. 

We are looking for someone with 2+ years working experience in a security role on Ethereum projects as well as some experience developing scalable backends (e.g. Python/Go/Java) that integrate with them.

# Qualifications:

* Fluency in Solidity.
* Experience with Solidity & Ethereum security and smart contract auditing.
* Experience with smart contract development tools, patterns, and practices.
* 5+ years of experience building clean, maintainable, and well-tested code.
* Great engineering skills and strong CS fundamentals.
* Excellent collaborative and communication skills.
* Able to work effectively under schedule pressure to fix defects, review code, design, write, test new code, and diagnose production issues.

# Benefits:

* Comprehensive Health benefits
* 401k Matching 
* Workspace benefits for your home office
* Personal & Professional development funds
* Family Planning Support
* Flexible Vacation & Reddit Global Days Off
* 4+ months paid Parental Leave  
* Paid Volunteer time off