The mission at Satoshi Energy is to accelerate progress toward a world with decentralized sound money and abundant sustainable energy. The company was founded in 2018 based on the idea that 24/7 power markets will benefit from 24/7 financial settlement and that the most sustainable and successful bitcoin mining will be powered by low cost renewable energy. Today, we are connecting renewable energy assets with bitcoin mining data centers under novel contract structures. In the future, we envision every kilowatt-hour streamed to an energy consumer will be settled instantaneously with a payment streamed to the energy producer.

As a Bitcoin Software Engineer, you will join a small, focused team of bitcoiners, engineers, and energy experts and have the opportunity to find novel solutions to technical challenges in the bitcoin and energy space. You will work across the organization and assist us with research, design, development, and deployment of cutting-edge solutions. As we grow, you will be instrumental in helping to build the team and build a more decentralized and sustainable future.

# Your Day to Day

* Work alongside product managers and fellow engineers.
* Architect and build real-time financial settlement applications for the energy industry.
* Write specifications for energy related Bitcoin and layer 2 (i.e. Lightning Network) protocols.
* Collaborate and communicate with sales, development, and operations teams to understand the needs of our customers.
* Mentor and train other team members on Bitcoin and layer 2 (i.e. Lightning Network) related best practices.

# Requirements

* Minimum 7 years experience programming, preferably in the energy or fintech industry.
* Expert understanding of the Bitcoin and layer 2 (i.e. Lightning Network) protocols.
* Experience setting up and maintaining cloud infrastructure for critical systems
* Experience building high-quality, innovative, and fully performing software in compliance with coding standards and technical design.
* Strong focus on collaboration, ownership, and test-driven development.
* Self-motivator with the flexibility and willingness to work on various initiatives simultaneously.

# Desired Skills and Experience

* Obsession with bitcoin, bitcoin mining, and energy markets.
* Desire to build a future with sustainable energy and sound money.
* Experience successfully managing software development teams and projects.
* Knowledge of security best practices, cryptography, and ongoing developments in the industry.

# Company Culture

* We are free thinkers, we believe in meritocracy, we challenge assumptions meticulously, and we don’t get overly emotional if we’re wrong.
* We believe in providing freedom and responsibility to foster a growth culture based on trust, transparency, and teamwork.
* We encourage each other to seek discipline, balance, and fun in all parts of life, so that we can always perform at our best on the job.
* We are a distributed team on a mission to build decentralized global power markets. You are welcome to work remote or join the team in Austin or Houston, Texas.

# Benefits

* Bonus plan, 401k, and equity participation.
* Medical, Dental and Vision.
* Unlimited PTO.
* Company gatherings in fun places - the best of being fully remote while still coming together regularly!

Blockchain protocols

Cryptocurrency

BitCoin

Remote

Bitcoin Software Engineer

In this role you will build and operate the most critical parts of Atem’s technical infrastructure: all of our blockchain interactions as well as payment flows. You will have tremendous impact on fighting climate change by building the key technology for a transparent and effective carbon credit market. You will join a small and dedicated engineering team that is passionate about changing the world for the better. As one of Atem’s earliest employees, you can be involved with other aspects of startups that may interest you, including: generating product ideas, talking to users, experimentation or marketing.

# In this role, you will...

* Have a strong engineering focus
* Interact with blockchain protocols to source and retire carbon credit tokens
* Interact with various EVM blockchains
* Implement fiat to crypto payment flows
* Manage customer funds
* Integrate payment providers and custodial wallet providers
* Architect and implement the necessary infrastructure

# What you need to be successful...

* Prior experience indexing blockchain data
* Have already implemented payment flows, ideally fiat - crypto
* Self starter that thrives well in ambiguity and can envision successful outcomes
* Clear communicator who’s able to express complex ideas and execute
* Balance velocity and quality in a quickly evolving product
* Passionate about the blockchain industry with the desire to learn more

# What’s in it for you...

* Join a purpose-driven, well funded startup led by experienced founders
* Make a mark in a disruptive and fast developing market
* Earn a competitive salary and participate in Atem’s success via our stock option program
* Join a team that has Berlin in its heart but works remotely
* Enjoy a high degree of autonomy while working in collaboration with a group of like-minded peers
* Put your getting-things-done attitude to work, without politics, ego or process slowing you down

Berlin

Senior Backend/Web3 Engineer

* Build smart contracts and corresponding tooling and infrastructure on Ethereum and Polygon
* Translate features into development stories in collaboration with product management and drive their delivery & execute the backlog
* Join the full lifecycle of contract development, including requirement gathering, dev, test, deployment and event monitoring.
* Code review the work of peers to assure quality, security, and performance
* Research new trends & assets in the DeFi ecosystem
* Work with other world-class crypto and DeFi protocols and their founders and developers
* In your application, please provide a brief summary of your coding experience and please include two relevant links/examples that show your best work.

# Requirements

* You’ve shipped products and delivered successful releases
* You have 4+ years of experience as a software engineer
* 1+ years of experience with Solidity, Vyper or smart contract development preferred
* Strong knowledge of NodeJs, Javascript/Typescript, HTTP, WebSockets, JSON-RPC
* Advanced knowledge of AWS (EC2, ELB, RDS, etc.)
* Experience working with agile methodologies (Scrum, CI/CD, TDD, Pair Programming)
* You are proactive. You come up with great ideas and prove them with data.
* Fluency in English, German is a plus (other languages a bonus)
* Accept and retain a large degree of independence and ownership for your decisions and dedicated tasks
* Very high attention to detail with emphasis on quality

# Awesome extras:

* You have worked with a FinTech or Financial Services service before
* Experience with web3 related libraries and API design
* Passion for blockchain technology, crypto-economic protocol design, game theory and/or decentralized finance
* Strong debugging skills and/or experience with reverse engineering

# With us, you’ll get:

* A competitive compensation package and profit participation in our token
* The opportunity to be part in one of the most exciting tech projects of 2022
* To work directly with highly experienced founders (built and sold 3 well known FinTech companies) on building and scaling a world-class DeFi product
* Direct influence on our development and vision with your contributions being valued accordingly
* A focused, communicative team with aligned goals
* Great market opportunity and growth potential
* Time off when you need it
* Subsidized public transportation ticket
* Regular team lunches and fully-stocked kitchen

JavaScript

Smart contracts

Solidity

Germany

Blockchain Developer

Chainlink decentralized oracle networks provide tamper-proof inputs, outputs, and computations to support advanced smart contracts on any blockchain. As the ecosystem continues to grow at an explosive pace we are building the infrastructure to further secure the reliability of our networks and incentivize good behavior 

As a smart contract engineer on the Economics team, you will develop highly impactful smart contracts that further secure Chainlink oracle networks to provide best in class off-chain data to the blockchain ecosystem. You will work closely with all functions at Chainlink, from engineering, operations, finance, marketing, and more to ensure the team releases easy to use and easy to manage smart contract driven products. Your core team will be composed of smart contract and software engineers and you will report to the engineering lead on the team.

# Your Impact

* Owning large components of the smart contract architecture that secures Chainlink data feeds
* Work closely with fellow engineers to build the end to end experience for your products
* Work closely with operations to ensure smooth deployment and management of your dApps
* Partner with the research team to build products that are practical and easy to use
* Collaborate with non-technical stakeholders to ensure you build products that delivery positive user experience and meets business constraints
* Actively participate in leveling up yourself and your peers in Solidity and smart contract development

# Requirements

* 3+ years of professional engineering experience working in a collaborative product-driven environment
* Deployed multiple smart contracts to Ethereum mainnet or an EVM compatible chain that secured substantial user funds
* Deep understanding of Solidity and the EVM
* Active participant in the blockchain ecosystem as a user
* Experience owning multi month long projects, including communication of progress, dependencies, and risk mitigation directly with stakeholders and partners
* Computer science fundamentals and systems design
* Experience in Rust, TypeScript, AWS
* Experience developing smart contracts on non-EVM blockchains
* Experience building dApps end to end

# Our Stack

Rust, Solidity, Typescript, AWS

# Our Principles

At Chainlink Labs, we’re committed to the key operating principles of ownership, focus, and open dialogue. We practice complete ownership, where everyone goes the extra mile to own outcomes into success. We understand that unflinching focus is a superpower and is how we channel our activity into technological achievements for the benefit of our entire ecosystem. We embrace open dialogue and critical feedback to arrive at an accurate and truthful picture of reality that promotes both personal and organizational growth.

# About Chainlink Labs

* Chainlink is the industry standard oracle network for connecting smart contracts to the real world. With Chainlink, developers can build hybrid smart contracts that combine on-chain code with an extensive collection of secure off-chain services powered by Decentralized Oracle Networks. Managed by a global, decentralized community of hundreds of thousands of people, Chainlink is introducing a fairer model for contracts. Its network currently secures billions of dollars in value for smart contracts across the decentralized finance (DeFi), insurance, and gaming ecosystems, among others. The full vision of the Chainlink Network can be found in the Chainlink 2.0 whitepaper. Chainlink is trusted by hundreds of organizations—from global enterprises to projects at the forefront of the blockchain economy—to deliver definitive truth via secure, reliable data.  
* This role is location agnostic anywhere in the world, but we ask that you overlap some working hours with Eastern Standard Time (EST).
* We are a fully distributed team and have the tools and benefits to support you in your remote work environment.

Rust

TypeScript

Smart Contract Engineer

WalletConnect is the open-source web3 standard to connect blockchain wallets to dapps. Any wallet, any dapp, any chain. Starting in 2018, our mission is to make web3 accessible to everyone. Every month, millions of people use WalletConnect in over 300 integrations. We just raised our $11M Series A from USV, Coinbase and other leading investors, and are looking to grow.

# The Role

As a Javascript Blockchain Engineer, you will join our small team and develop and maintain the Javascript SDK implementation of the WalletConnect protocol. You have a passion for open-source software, and will work on code that is deployed throughout the web3 ecosystem. The role involves implementing new features from protocol specifications, creating documentation, as well as client testing. The position is full-time and completely remote.

# Responsibilities:

* Read and understand a protocol specification and be able to break it into issues and turn it into code
* Refactor and improve existing features in the client
* Ensure the client stays compatible with the other client implementations
* Develop and publish helper packages on NPM for blockchain JS libraries

# Must have:

* 3+ years professional experience in software development at least one modern programming language, including Javascript, TypeScript, Golang, C++, Java, or Rust.
* At least 1 year of professional Javascript or Typescript experience.
* Experience with Websocket APIs and JSON-RPC protocol

# Nice to have:

* Experience with blockchain protocols, whether it be usage of a blockchain API, knowledge of how a blockchain operates, or any other experience
* Experience with blockchain-related libraries, such as Web3.js and/or Ethers.js
* Experience with documenting a large codebase, both for internal and user-facing components
* Familiarity with open-source software principles
* Experience writing software from a technical specification or a reference implementation
* Experience with building and publishing npm libraries (we use Webpack / Rollup)

# What WalletConnect offers:

* Fully remote position
* Competitive salary
* Remote work allowance
* Company equity
* Token offering

Web3

Javascript Blockchain 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.

As a Blockchain Data Engineer, you'll be responsible for building and maintaining the data infrastructure for the DeFi projects Nethermind is involved in. You'll write and maintain ETLs and their orchestration in order to build meaningful products and APIs.

# The role:

* Building bespoke data infrastructure for various projects.
* Crawl and ingest data from various blockchains.
* Create scalable systems to solve different problems using modern cloud technology and industry best practices.
* Design database schema that is performant, scalable, and maintainable
* Assist with data analysis queries, carrying out data analysis on the infrastructure.

# You have:

* Experience/strong interest in blockchain
* Experience in greenfield data engineering projects, specifically in data infrastructure projects.
* Advanced knowledge of modern data pipeline architecture and cloud platforms, e.g. AWS/GCP/Azure.
* Proven success in communicating with users, other technical teams, and senior management to collect requirements, and describe data modeling decisions and data engineering strategies.
* Hands-on design experience with data pipelines, joining data between structured and unstructured data.
* Knowledge of data pipeline tools (e.g. Snowflake/Redshift/BigQuery, AWS lambda/S3, Apache Airflow, Spark/Hadoop etc.).
* Comfort with one or more: Python/Scala/Java/Golang
* Comfort writing SQL queries.

# Nice to have:

* Knowledge of software engineering best practices across the development lifecycle, including agile methodologies, coding standards, code reviews, source management, and build processes.
* Comfort with infrastructure as code, Terraform/Terragrunt
* Strong understanding of distributed systems and Restful APIs

# Perks and benefits:

* Fully remote
* Flexible working hours
* Plus equity

Java

Blockchain

Scala

Blockchain Data Engineer

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

Ethereum

Truffle

Senior Solidity Engineer

There is a steep learning curve when it comes to crypto. Only once overcome will we have mass adoption. Aldrin Labs aims to debunk the belief that decentralized finance is inherently complex and separate from centralized finance. We will amend the frustratingly poor user experience and fragmentation that millions of crypto natives and newcomers face. We will seamlessly merge the centralized and decentralized world.

Aldrin Labs aims to be purposeful. We strive to halve the fifty working years of the average person. This is the mission of Aldrin Labs.

Aldrin Labs has Aldrin DEX and is incubating an innovative crypto wallet and money market. These protocols will integrate with each other to provide easy functionality and purposefully help people achieve financial freedom.

Aldrin Labs is well funded ($8M) and aggressively looking to expand our 30+ employee count.

Aldrin Labs is a fully remote company. We are interested in capturing the best talent, no matter where you live.

# The Role

We’re looking for a Senior Front-End Developer Web3 (Remote) to develop front-end applications for Aldrin’s new products, including but not limited to our centralized and decentralized exchange platform, as well as other internal applications, as necessary.

# You will:

* Build, deploy, and mature user-friendly, highly secure, maintainable, high-performance scalable interfaces, and client-facing UI systems
* Work closely with our product and design teams to develop new features from design to production
* Have an entrepreneurial spirit and bring ideas to front-end development
* Work effectively with a high degree of autonomy, but also enjoy working collaboratively in a team
* Understand the front-facing user experience of our products, and work alongside other team members to ensure that we utilize best principles/practices
* Design new and optimize existing systems and participate in design reviews

# Minimum Qualifications:

* 5+ years of experience in front-end development
* Expertise in front end development with React (ideally 5+ years or at minimum 3+ years extensive experience), with an understanding of React best practices, optimizations, and profiling
* Strong experience with GraphQL/Apollo/REST
* Verbal fluency in English
* Interest and enthusiasm for crypto markets, blockchain technology, decentralized finance, and the whole Web3 ecosystem

# Nice-to-Have Qualifications:

* Experience with TypeScript and JavaScript
* First-hand experience with Web3 front-end technologies and developing DeFi applications and/or FinTech applications
* Experience working with a large codebase and e2e testing like Cypress
* BS in Computer Science or equivalent

# Benefits

* Competitive salary
* 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

React

GraphQL

Senior Front-End Developer Web3

DXdao is a decentralized collective that builds and governs DeFi protocols. Founded in 2019, DXdao’s product suite includes:

* Swapr, a governance-enabled multi-chain AMM with custom liquidity mining rewards creation and best-price trading features
* Carrot, a platform for community-driven programmable token incentives
* DXvote, a governance platform for DAOs made by a DAO. Reputation, token voting and holographic consensus
* Omen, a leading prediction markets platform

DXdao is an entirely on-chain organization. Everything from hiring decisions to product updates happen via on-chain proposals through its community-driven governance system, based on holographic consensus.

DXdao is building a suite of Web3 products. As such, it heavily relies on the technical expertise of Web3 developers with solid knowledge of building dApps on top of Ethereum. We are looking for a skilled Senior Web3 Front-End developer to join us at DXdao!

What you should be interested in doing:

* Interested in DeFi and solving complex problems (a background in finance/STEM preferred)
* Collaborating with others on writing, testing, and deploying maintainable code that interacts with the Ethereum blockchain
* Contributing to full-stack software development with an emphasis on front-end work
* Developing responsive web interfaces
* Ensuring the technical feasibility of UI/UX designs
* Optimizing front-end code for performance and scalability
* Working with designers to create pixel-perfect representations of visual comps

# DXdao is looking for:

* A DAO/DeFi enthusiast who believes in the power of decentralization
* An independent, self-starter who is comfortable working in a fast-paced environment
* A developer with solid experience in React (Typescript) and its ecosystem
* A developer who can write maintainable, high quality code
* Someone who has the ability to work in Agile environment (Scrum)
* A developer who can implement SOLID principles of SWE
* A contributor with excellent written and verbal communication skills

# What we offer:

* A competitive and transparent salary system that governs all DXdao contributors
* A global community
* A flexible remote working policy and working schedules
* Stipends to travel to and attend Ethereum gatherings around the world

Senior Web 3 Front-End Developer

As a Solidity developer at CPI Technologies your job will be working together with our team to bring the ecosystem concepts of our customers to reality. You’ll be designing tools used by some of the top blockchain projects. We’re excited to have you join our international team to help build exciting projects built on blockchain technology.

You’ll join our highly skilled engineering team and help us build world-class innovative products and services that create new capabilities in blockchain infrastructure. You’ll work closely with our CTO and Product Manager to design, build and deploy new features. 

# Responsibilities

* Be a key member of the technical team architecting and building CPI products and working with the entire organization to further the objectives of the company
* Interact with the EVM and writing high-quality, well-tested Solidity
* Comprehensive unit and integration tests
* Work with the engineering team to support customer technical inquiries
* Work with the team to guide the product roadmap
* Demonstrate and inspire a strong sense of teamwork
* Demonstrate and inspire integrity, quality, and professionalism

# Job requirements

* 1+ years of experience writing, testing, and/or auditing production grade Solidity contracts. You have deployed contracts to Mainnet
* 3-5+ years programming experience
* Understanding of the Ethereum Virtual Machine, gas optimization tradeoffs and security best practices
* Being able to work in a team environment and follow Agile processes.
* Written and spoken communication skills in English.
* Experience with lending protocols, DEXs, MEV, and more
* Ethereum blockchain test tools (e.g.Truffle, Embark, Hard Hat, etc.)
* Solidity and knowledge of ABI (eg. variable mapping to storage slots)

Europe

Solidity Developer

Developed to solve the inefficiencies seen in traditional systems, Maple brings the corporate credit market 100% on-chain using smart contracts to remove time and cost frictions, and executed on blockchains for immutability.
  
Maple Finance is infrastructure for experts (pool delegates) to run on-chain lending businesses, and have three core customers Borrowers, Lenders and Pool Delegates. Maple offers Borrowers transparent, capital-efficient financing. For Lenders, Maple offers a sustainable yield source through lending to diversified pools of crypto’s premium institutions. Loans are managed and underwritten by sophisticated teams of credit analysts called Pool Delegates, who assess credit-worthiness and set loan terms with Borrowers.  

# The Team

Today the Maple team is 40+ strong, with staff from BlockFi, Kraken, Meta, Bank of America, Gemini and MakerDAO to name just a few blue-chip orgs. Team profiles are shared on our site here!

Remote anywhere in EST or Europe

# The Role

We are looking for a mature and talented Senior Web Developer that has several years' of first rate commercial experience. The position requires you to have a deep understanding of React, TypeScript and GraphQL. You will be working with 4 other developers on the Off Chain team in agile 2 week sprints on V2 of the web application stack.

This is a critical position requiring you to take ownership of key projects using React applications, Apollo GraphQL APIs and Graph Protocol indexed Ethereum state.

The right candidate will be truly passionate for the craft of software development. The role demands the highest standards of tested, linted and formatted code. We are a fully remote team located across Europe, the US, and Asia. We have two daily stand ups at 10am CET and 9:30am EST, this ensures  suiting the individual team members core working hours.

# The Opportunity

This role puts the right candidate at ground zero of a Global Capital Markets platform for the future of Institutional Credit and they will heavily impact/influence the further development of it over the coming years. In just 4 months Maple V1 has surpassed $170 million of USDC deposits into the protocol via the web application, the concept is proven and we are leveling up dramatically.

We require a developer with high Code Quality standards to match the scope of our vision to expand the digital economy. In this role you will build the innovative features that our users will find the most valuable. To achieve this you will be using the most cutting edge tech & tools available, in these fast exciting times of Web3 exploration!

# Responsibilities

* Design and implement a functional user-friendly experience
* Collaborate with Product, Design, and Engineering teams to define, prioritize and develop solutions/features
* Own and plan projects and products end to end for long-term impact – including UI, backend, testing, etc.
* Reviewing application requirements and interface designs.
* Developing and implementing highly-responsive user interface components using React concepts.
* Troubleshooting interface software and debugging application codes.
* Monitoring and improving front-end performance.
* Documenting application changes and developing updates.
* Coding out a Landing page with good knowledge of HTML and CSS fundamentals.

# Requirements

* JavaScript and TypeScript ninja with a minimum of 5 years professional experience
* Expert level React with preference for working with hooks
* Open Source software development experience with expert Git and Github skills
* Advanced knowledge of GraphQL backends
* Deep understanding of software documentation procedures
* Preference for Test Driven Development (TDD) and highly testable code
* Apollo Federated Gateway API knowledge
* Ethers.js, MetaMask, WalletConnect and other Web3 technologies on Ethereum.
* Great if you've used Graph Protocol and Ethereum blockchain indexing tools
* Fluency in English

# What's in it for you

* Base salary of $140K+ per annum. Paid in your choice of crypto (USDC) or local fiat currency
* MPL token allocation, giving you a stake in Maple’s long term success
* 30 days paid time off per year
* Fully remote and flexible working giving you the autonomy to live and work your way
* Optional access to shared working space at your local WeWork or equivalent
* Contract or full time employment opportunities including all local statutory benefits
* Fully transparent and collaborative team culture
* Funding for personal skills development
* Annual team offsite events

# Our Tech Stack

All:
* TypeScript
* NodeJS
* Ethers.js
* Hardhat
* Docker
* Solidity

Frontend:
* React

Backend:
* Graph Protocol
* GraphQL

Devops:
* Terraform
* Bash
* GCP/AWS

Senior Full Stack Web Developer

Vital Hint is proud to introduce ClubRare - The World's first community-centered Physical NFT marketplace for collectors. We connect the Real-world and the Metaverse. We are a community for people who trade the things we love.

We are a fully remote company with no fixed headquarters. The team is distributed throughout the world - we form an inclusive network across a variety of locations, lifestyles, and backgrounds.

Our culture is driven by empathy, integrity, strategic thinking, innovation, leadership, and the shared desire to perform at our peak. While our differences make us adaptable and versatile, it's our shared values that give us the strength and drive to become the open metaverse for collectors.

# What’s in It for You?

* Be part of building a great project and make a real impact in your career.
* Work flexible hours from anywhere and be part of a team that is driven by strong values and a clear shared vision.
* Directly shape the future of a completely new model for cryptocurrency and blockchain applications.
* Challenge your skills and push your creative limits working with the latest technologies & systems.
* Play an active role in one of the most significant technological innovations in human history.
* Receive a competitive salary paid in crypto.

# Your Impact

We are looking for a Blockchain Developer or a Smart Contract developer to join our technology team. Our ideal candidate will have to understand the value of clear and performant code as well as want to define the leading solution. They will relish the opportunity to build a new category of computing platform and desire to build a thriving open source ecosystem. You will have demonstrated expertise with distributed infrastructure development, as well as the curiosity and creativity to explore new approaches to complicated problems. Most importantly understand the value of a developer-friendly infrastructure while breaking new ground in a quickly-evolving space.

# Responsibilities:

* Explore design implications around smart contracts and their interactions with each other.
* Work with the Product team to explore feasibility and design of the decentralization of various processes.
* Take ownership from the ideation phase to deployment and management.
* Develop host and back-end systems for our NFT minting projects and the marketplace platform.
* Optimize web applications for maximum performance across a variety of devices including desktops, tablets and smartphones
* Build reusable components and libraries to speed up development efficiency
* Collaborate with your team to guarantee streamlined implementation of applications

# Requirements

* Experience in NFT marketplaces and/or decentralized cryptographic systems.
* 3+ years of experience coding with Solidity and utilizing the blockchain platform's library (e.g Web3.js for Ethereum).
* Bachelor/Masters degree in computer science, engineering or equivalent industry experience.
* Proven track record of delivering projects with high quality, maintainable code
* Focused on delivering impact and results to the makers and consumers who will benefit from this new ecosystem.

NFT Smart Contract Developer

Rolla is building a cutting-edge DeFi Options trading protocol that’s extremely user-friendly, designed to bring high yield generation strategies to everyone in crypto while abstracting the complexities of DeFi and derivatives. 

Our team is a tenacious, geeky, and optimistic group, working towards a decentralized financial future. You’ll be joining a highly technical team that values shipping beautiful, usable products to give people real control over their financial future. Our team members from Sushi, Polygon, BitTorrent, Adyen and commit to top 10 web2 and web3 core repos.

We’re also backed by the top investors and option market makers in the cryptocurrency space that believe in our vision. At Rolla, you’ll have access to industry leaders, developers, exchanges, and traders to collaborate and engage with as you pioneer the next frontier of DeFi.

# Responsibilities

* 3+ years of backend engineering experience.
* Experience working with Typescript, Node, and writing unit tests and integration tests.
* Experience in all stages of product development including technical planning, rigorous testing, and launch.
* Ability to write high-quality, well-tested code in an asynchronous environment.
* BSc/BA in Computer Science, Engineering, or a related field preferred.
* Experience working with Nestjs is a big plus.
* A passion for DeFi and Web3

# Rolla offer

* A truly rare opportunity to work on the bleeding edge of the future of decentralized derivative trading. You’ll be building products with the potential to give millions of people trustless yield on their money
* Great culture: highly ambitious, smart, friendly, non-hierarchical, collaborative, and entrepreneurial
* Top fixed compensation and token options. Get an early share of Rolla’s future token and be able to participate in Rolla’s upcoming DAO
* Flexible work hours and location, with the ability to work in person (preferred) with team members in Singapore
* World Class investors. We're backed by the top VC's in crypto and you'll have access to industry experts

# Write to us if you

* Have a strong entrepreneurial mentality
* Owner attitude, you focus on the ultimate result for the company, both short term, and long-term growth
* Tenacious, ambitious yet humble, willing to work hard, take feedback and learn on the way
* A deep love for problem-solving and seeing the results of your work

Node.js

DeFi

Senior Backend Engineer Web3

Join our team and work directly with the founders to build the future of Automation for the upcoming decentralized web. Enjoy a lot of perks, travel with us to cool events and participate in amazing off-side retreats with the team!

Participate in creating the most sophisticated crypto bot network ever created by designing the smart contracts that will rule them all!

We are a fully remote team and although we hire globally, there is a strong preference for this role to be based in Central Europe.

# What we offer:

* A fully remote team with team members in Zug, Paris, New York, Berlin, and many other cool places
* Join the "Gelato Legendary Member Club" and work directly with the founders
* Participate in building the infrastructure that aims to become the glue between all crypto networks and power the most promising dapps on Ethereum and beyond
* Generous Token Package - Get a share of the network's token and be able to participate in the Gelato DAO
* Chance to participate in shaping the future of web3 by working together with the biggest projects in this space, such as MakerDAO, Connext, Quickswap, etc.
* Worldclass Investors - We are backed by top class VCs and Angels including Dragonfly, Galaxy Digital, ParaFi, Gnosis, Stani Kulechov and many more!

# Requirements:

* Experience in writing smart contracts in solidity
* Experience with web3 libraries (ethers.js, web3.js) - preferably ethers.js
* Experience with testing your code locally and on ethereum test networks
* Experience with the hardhat development environment
* Experience deploying contracts to production environments like mainnet or polygon
* Experience with writing subgraphs for indexing contract data
* Experience using dapps like Uniswap, Aave, or Maker.
* You can work with high autonomy
* Strong written and verbal communication skills

# Bonus:

* Knowledge about the inner workings of the EVM
* Mathematics & Finance Background
* Experience in building and running bots that interact with smart contracts on Ethereum
* Knowledge about Ethereum Client & Mining software
* Front-end experience, building dApps on existing smart contracts

# Technologies we use and teach:

* Solidity
* Node.js
* Typescript
* Javascript
* Ethers.js
* Hardhat
* React

# Benefits

* Unlimited holiday (yes you heard that right!)
* Work very autonomously
* Generous GEL token package
* Competitive Salary
* Work together with one of the best technical teams on Ethereum
* Build relationships with top blockchain teams which are already Gelato users, including MakerDAO, Instadapp, Zerion, Quickswap and many more
* Chance to travel the world to go to exciting events and connect with key players in this industry
* Join amazing in-person offsites all over the world

Smart Contract Developer

Chain is looking for an experienced and highly motivated Senior Blockchain Protocol Engineer.

We're expanding the team of Blockchain Engineers working on Chain Core and Sequence, our high-performance blockchain and ledger-as-a-service product.

Chain is an award-winning technology company that specializes in blockchain related services and software with production ready products in the market. 

# As an engineer, you are someone who:

* 3+years in Blockchain Protocol Engineering experience preferred
* Understands the value of clarity and test coverage in your code and optimize for maintainability.
* Has a deep understanding of Blockchains and all of the accompanying Cryptography Primitives (Public Key Cryptography, Merkel Trees, UTXO/Account models etc.)
* Is excited about Distributed Systems and are able to articulate the tradeoffs systems have to make when operating in a distributed environment (CAP, Linerizability, Consistency, Availability etc.).
* Is comfortable and enjoys working on Systems and low-level stuff (Network Layer - DPDK, File Systems etc.)
* Is able to tie together high level requirements around Latency, Throughput back with what needs to happen at the System Level

# Key Requirements

* Demonstrated excellence in software engineering including exposure to blockchains, distributed systems, scalability, and algorithms
* Demonstrated excellence in a Systems Language such as Rust, Golang, C/C++, Elixir, Erlang
* Demonstrated technical design capabilities, architecting complex technical features despite ever-evolving product requirements
* Knowledge of Basic Crypto Primitives (Public Key Cryptography, Transaction Signing & Verification etc.)
* Experience with technical leadership of engineering teams including mentorship and coaching
* Excited about joining an Ego Free environment that moves quickly and Values and Provides Constructive Feedback
* (Optional) Knowledge of more advanced Crypto Techniques (Schnorr Signatures, Edwards Curve etc.)
* MSc/PhD and/or relevant experience preferred for this role

As a great fit candidate, you are someone who has experience working on complex, distributed systems/blockchains in systems languages such as Rust, Golang, C/C++.

You are someone who is happy building tooling and infrastructure that will be used by other engineers and enterprises in complex business cases and are empathetic towards this need.

The compensation package will include an industry competitive salary and bonuses linked to company performance. The benefits include unlimited PTO, parental leave, food catering, and health(varies by region). The position is a remote position. 

Distributed Systems

Networks

Senior Blockchain Protocol Engineer

The mission of Trust Machines is to build the largest ecosystem of Bitcoin applications and grow the Bitcoin economy. We’ve recently raised $150M to realize this vision, build Bitcoin apps, and the open source technologies required to unleash the true potential of Bitcoin as a final settlement layer. Trust Machines is doubling down on Bitcoin and Stacks, a programming layer for Bitcoin, to help make it faster and easier to develop on, while building applications that make Bitcoin productive. 

Trust Machines is looking to hire a Bitcoin core developer to contribute to Bitcoin core and collaborate on Bitcoin software maintenance and development. In this role you’ll collaborate with the broader Bitcoin community, assist in technical assessment and implementation of BIPs, and join the Trust Machines team as an expert and advisor in Bitcoin development. This role is part researcher, part teacher, and provides a lot of room for independence, self sufficiency, and creativity.  

# What You’ll Do:

* Work on Bitcoin and Lightning development 
* Experience with and commitment to the open source Bitcoin ethos 

# What We’re Looking For:

* Extensive experience in C/C++. Interest in learning Rust. 
* Deep knowledge of the crypto space and underlying technologies 
* Experience with automated testing and unit tests 
* Strong technical documentation skills 
* Advanced knowledge of cryptography concepts 
* Strong communication skills 
* Sense of ownership and independence 

# We’d Also Like to See:

* An openness to new ideas and applications of blockchain technology

Bitcoin Engineer

Clearmatics is a protocol engineering company. We are building a new financial market architecture that is more open, fair, and resilient than the legacy systems that are in use today. We develop protocols and software that create new markets for risk and more efficient infrastructure for trading, backed by a robust and scalable blockchain network, and secured with modern cryptographic techniques and economic mechanism design.

Clearmatics is based in London but operates on a 'remote first' model. We welcome candidates from all over the world. We have close ties to the Open Source and Ethereum communities, with Vitalik Buterin as an adviser.

The Engineering team at Clearmatics is responsible for developing our blockchain software at Layer 1 and Layer 2. At the core of our stack is the Autonity client, the node software that powers our blockchain network. It is based on Ethereum (go-ethereum) and is secured by Tendermint Proof-of-Stake consensus. Our decentralised platforms are built on smart contracts and decentralised applications, and are supported by backend services in Go.

We're looking to hire a Core Developer to expand our Layer 1 Engineering team.

# ABOUT YOU

You're a systems programmer with good knowledge of Layer 1 protocols, and a passion for blockchain and decentralisation. You enjoy working to a high standard and writing code that is clean, performant, and maintainable. You appreciate the importance of careful design choices and can anticipate the impact of code changes on wider system behaviour. You can demonstrate a strong interest in blockchain and may even have open source contributions that you can highlight. You express yourself clearly in writing and in discussions.

# RESPONSIBILITIES

You will be involved at all stages of the development lifecycle for the Autonity protocol and its blockchain node client (a fork of go-ethereum). These include:

* Implementing new protocol features in Go and Solidity
* Developing new distributed systems tests and frameworks
* Contributing to protocol and design specifications
* Working with members of the community to resolve issues
* Your work will ensure that Autonity client is correct, reliable, performant, and secure. This will enable Autonity to serve as the foundational layer for a new ecosystem of decentralised markets.

# REQUIREMENTS

* At least a Bachelor's degree in Computer Science or a related field
* Strong programming skills in a low-level language like Go, Rust, or C++ (ideally 2+ years with Go)
* Experience with network, concurrent, and distributed programming/debugging on Linux systems
* Good knowledge of Ethereum protocols, BFT and dPoS consensus, P2P messaging, and crypto primitives

# BONUS POINTS

* Experience developing on a blockchain node client (preferably Ethereum-like)
* Knowledge of distributed systems theory obtained from coursework or self-study
* Smart contract programming experience using Solidity and Web3 APIs

Blockchain Core Developer

Gelato Network is a protocol that automates smart contract executions on Ethereum. We develop an open-source system coordinating a decentralized network of relay nodes that developers can plug into to create amazing automated dApps for their users.

Join our team and work directly with the founders to build the future of Automation for the upcoming decentralized web. Enjoy a lot of perks, travel with us to cool events and participate in amazing off-side retreats with the team!

Participate in creating the most sophisticated crypto bot network ever created by designing the smart contracts that will rule them all!

# What we offer:

* Small, fully remote team, with team members in Zug, Paris, New York, Shanghai, Berlin and many other cool places. 
* Join the “Gelato Legendary Member Club” and work directly with the founders
* Participate in building the infrastructure that aims to become the glue between all crypto networks and power the most promising dApps on Ethereum
* Token Options - Get a share of the networks future token and be able to participate in Gelato’s upcoming DAO
* Worldclass Investors - We are backed by the community, including industry leading experts such as Dragonfly, ParaFi, Nascent, IDEO, Gnosis, Christoph Jentzsch, IOSG, Galaxy Digital and the two largest Venture DAOs (The LAO, Metacartel Ventures)

# Requirements:

* Experience in writing smart contracts in solidity
* Experience with web3 libraries (ethers.js, web3.js) - preferably ethers.js
* Experience with testing your code locally and on ethereum test networks
* Experience with the hardhat development environment 
* Experience deploying contracts to production environments like mainnet or polygon
* Experience with writing subgraphs for indexing contract data 
* Experience using dapps like Uniswap, Aave, or Maker. 
* You can work with high autonomy
* Strong written and verbal communication skills

# Bonus:

* Knowledge about the inner workings of the EVM
* Mathematics & Finance Background
* Experience in building and running bots that interact with smart contracts on Ethereum
* Knowledge about Ethereum Client & Mining software
* Front-end experience, building dApps on existing smart contracts

# Technologies we use and teach:

* Solidity
* Node.js
* Typescript
* Javascript
* Ethers.js
* Hardhat 
* React

Switzerland

Steakwallet is a multi-chain DeFi wallet, focused on surfacing opportunities available throughout web3. From entering into Yearn vaults for stablecoin yield, to staking assets on 20+ different L1s, Steakwallet is the most powerful and user friendly wallet on the market.

# What we're looking for

We're seeking a talented web3 engineer to help build out the Steakwallet metaverse. Uniquely difficult due to our multi-chain nature, your day to day work could range from writing Solidity smart contracts to indexing Solana account transaction history.

You'll partner closely with our Head of Engineering on greenfield projects to help Steakwallet scale to the masses.

# Responsibilities

* Write smart contracts responsible for managing millions of dollars worth of assets
* Create staking/vault/swap integrations that users will interact with in the Steakwallet application
* Index data across a variety of networks including Ethereum, Near, Tezos, Solana and more
* Work closely with and report directly to our CTO
* Balance engineering speed and quality, with a focus on shipping.

# Qualifications

* 3+ years engineering experience
* 1+ years web3 experience
* Proficiency in TypeScript and one of Solidity/Rust/Golang
* Excellent communication skills
* (Optional) Knowledge of non EVM compatible chains

Web3 Blockchain Engineer

We at Aurora Labs are looking to hire a Manual and Automation QA engineer. This is a full-time position that can be done remotely anywhere in the world.

Aurora builds an Ethereum-compatible network with increased scaling and lower transactions costs.
Your main responsibilities will be to develop new features and provide support on the Aurora engine. Notably, keeping up to date with Ethereum improvements as well as quality improvements on the performance of the engine.

Aurora Labs labs have created the Aurora Ecosystem which mainly consists of two components: Rainbow Bridge and Aurora Engine. Rainbow Bridge is a fully trustless and decentralized bridge that interconnects Ethereum and NEAR ecosystems. Aurora Engine is an EVM built on the NEAR Protocol, delivering a turn-key solution for developers to operate their apps on an Ethereum-compatible, high-throughput, scalable and future-safe platform, with low transaction costs for their users.

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!

# Our Values 

* Execute extreme ownership 
* Strive for excellence 
* Embrace authenticity 
* Promote merit 
* Get shit done 

# Qualifications

* Exceptional ability to keep things organized during the development of complex projects with a distributed team
* Proficiency in Rust
* Deep understanding of Blockchain technology and Ethereum in particular
* Knowledge of the Ethereum virtual machine
* Experience working in critical infrastructure systems, i.e blockchain
* Self-motivation and ability to fully own tasks
* Fast learner with a natural curiosity
* Clear ability and willingness to hustle and get things done
* Extreme ownership mentality - ability to take extreme ownership and full responsibility of tasks and projects
* Passionate about blockchain technology
* Able to provide valuable feedback and input during meetings
* Professionalism and quality in work ethic
* Staying committed to weekly assignments and being able to follow through

# Nice to have

* Strong understanding of Ethereum smart contracts and best practices
* Experience implementing complex Ethereum contracts in Solidity
* Familiarity with NEAR
* Previous experience in the blockchain industry, particularly around the NEAR, Ethereum, Binance Smart Chain, or Solana ecosystem
* Basic knowledge of Javascript
* Basic knowledge of cryptography

Blockchain Engineer

Shard Labs is a global remote R&D blockchain company, embracing remote working culture. Our core specializations are protocol development (bridges between chains, client forks, and upgrades), dapp development (multichain), and running blockchain infrastructure in production-grade environments. Automatisation and continuous software delivery are part of our software development lifecycle.

Tech stack that we use (but are not limited to): React.js, Node.js, Solidity, Go, Rust, Docker. Our cloud platform of choice is AWS.

# Proudly partners with:

Starkware, NEAR, Moonbeam, Ethereum, Polygon, Polkadot, Celo, Lido, and many more.

We are also building multiple of our own products inside the space!

# Our values

We take pride in creating and nurturing an inclusive and exceptional environment where everyone is welcomed and accepted as they are. We believe that diverse teams essentially contribute to Shard Labs' growth.

Shard Labs' rapid growth results from a motivated, determined, and hard-working team. Our team brings experience in software development from around the world.

The knowledge and experience that you bring are essential for the starting point, but even more crucial to us is your hunger for learning, good organizational skills, and initiative in your daily work. No matter how much you already know, there's always something you can learn or teach. We trust our employees. We won't constantly be behind your back, so it is good to possess self-driven skills to make it easier for you to organize your work. We will be your inspiration, but we are open to hearing your voice too. We highly value good suggestions, fresh ideas, and new perspectives. 

We live and promote a good work-life balance. Our flexible work culture encourages you to have greater control regarding where, when, and how you work. If your dream is to make a career shift – we support exploring new fields right under our roof. We offer opportunities for personal growth, tons of autonomy and responsibility, a results-driven environment, a young international team, exposure to a wide array of ecosystems, and trailblazing technologies.

# What you will be doing:

You will be a developer within the StarkNet team, so some of the responsibilities on this project include: 

* Analyzing, designing, and developing software features and enhancements
* Participating in software design meetings and analyzing user needs to determine technical requirements
* Providing solid technical solutions to complex issues whilst helping us deliver the best user experience and improve our product
* Resolving the challenging technical and application problems of the project

# To qualify for the role, you should have:

* 2+ years of professional experience working with JavaScript/TypeScript
* Strong organizational skills
* Excellent verbal communication skills

# Added bonus if you have:

* Familiarity with Blockchain JavaScript libraries (web3.js or ether.js)
* Experience in developing npm packages and JS tools

If you see yourself as curious, motivated, and forward-thinking, willing to explore new blockchain worlds, and boldly go where no other developer has gone before, you are the right fit for us!

Don't hesitate to contact us and apply. You’ll have the opportunity to work on some of the most challenging and relevant issues in the blockchain ecosystem.

We strive to be the best destination for the industry's top talent, creating an open environment where bright ideas are given a chance to shine, and everyone is eager to lend a helping hand.

Let's explore and create new blockchain galaxies together!

JavaScript / TypeScript Developer

We are a team of ex-Google DeepMind AI researchers and engineers with extensive experience in designing and implementing cutting edge solutions to machine learning and numerical optimisation problems.

The mission of Kosen Labs is to bring the benefits of AI & advanced optimization to the DeFi space and beyond, all while keeping entry barriers low for the end user and allowing everyone to partake in the new decentralised economy.

We are funded by top-tier Silicon Valley and crypto-native VCs, such as Andreessen Horowitz and Framework Ventures.

# The role

We are looking for an ambitious Blockchain Engineer to join the growing Kosen Labs Engineering team. As a Blockchain Engineer you will work with our senior team members to develop and implement secure smart contract protocols and backend services to connect users with the Kosen ML ecosystem. The work will initially focus on the major DeFi protocols, primarily different AMMs and derivative protocols.

# Key Responsibilities

* Working independently on software development tasks;
* Contributing to the design of algorithms;
* Writing clean, straightforward, efficient code that satisfies acceptance criteria and specifications;
* Committing and submitting frequently small pull requests;
* Fixing bugs in your own code and in legacy code from others;
* Troubleshooting, debugging and upgrading existing software;
* Writing documentation for the code.

# Skills and Experience

* General knowledge of blockchain technology;
* Understanding of how EVM-based chains work;
* Proven 3+ years of experience in software or hardware engineering;
* At least 1 year of Solidity development experience;
* Good knowledge of development frameworks like Truffle, Hardhat or Brownie;
* Experience with web3.js or ethers.js;
* Experience with OpenZeppelin libraries;
* Experience using TDD methodologies;
* Basic financial knowledge;
* Familiarity with smart contract exploits.

# Nice to have

* Experience with DeFi protocols;
* Quant finance background;
* Basic understanding of machine learning technology.

# Personal Qualities

* Excellent verbal and written communication skills;
* Rigorous attention to detail and a desire to deliver high-quality work;
* Self-motivated with a passion for continuous improvement and learning;
* Willingness to adapt to a variable role and a great can-do attitude.

# Benefits

* Competitive salary;
* Equity and token allocation;
* Remote-first, flexible, and fun working environment;
* Unlimited time off;
* Occasional paid travel costs to conferences and off-sites.

London

Axelar is the universal interoperability network connecting all blockchain ecosystems, applications, assets, and users. Axelar network consists of a protocol suite, tools, and APIs, designed to break down the barriers to cross-chain communication. Powered by a decentralized open network of validators; anyone can join the network, use it and build on it. The Axelar network makes cross-chain communication as simple as using http(s) protocols on the web. Platform developers can plug-in their blockchains to other ecosystems, and application builders and users can leverage a simple protocol and API to access global liquidity and communicate with the entire ecosystem.

The Axelar team has deep roots in distributed systems, consensus, and cryptography. The venture has raised over $65M at a $1B valuation from leading backers such as Polychain, Dragonfly Capital, Rockaway Blockchain Fund, Coinbase, Binance X, DCVC, and others. It was founded by Sergey Gorbunov (PhD MIT) and Georgios Vlachos (MSc MIT), who previously worked together on the founding team at Algorand.

Axelar Mainnet is live and supports cross-chain asset transfers between Ethereum, Polygon, Fantom, Avalanche, Terra and Moonbeam with more networks and assets added regularly. Axelar has developed a sample cross-chain asset transfer application called Satellite, which provides a simple, efficient user experience to transfer assets between chains.

Axelar is building the infrastructure to connect web3. Join us!

# The Role

This is a newly created role for a motivated smart contract engineer who is interested in building the new financial stack from the ground up in the Axelar Network.

You will be designing new, decentralized products, whilst also implementing business logic across the different ecosystems through smart contracts.

# What you will be doing

* Building the new financial stack through smart contracts, working with testnets and deployment scripts.
* Assuring reliability and security across the Axelar Network.
* Writing and compiling the smart contracts across various blockchains.

# What you will need

* Experience with solidity, ERC-X contracts, bitcoin scripts and other smart contracts on other blockchains.
* Understanding of security pitfalls, vulnerabilities, mitigation strategies.
* Experience deploying and maintaining smart contracts on blockchains.
* Understanding of basic cryptography, mechanism design, distributed systems.
* A wealth of relevant experience within the blockchain world.

# About you

* You have a strong sense of ownership, with the ability to lead and share knowledge to reach solutions as well as the keenness to learn.
* You’re open to collaborating with internal and external stakeholders, flourishing in a distributed environment.
* You enjoy being hands on, being a self starter that thrives well in ambiguity.
* A problem solver at heart that can envision successful outcomes.
* You have a creative flair, always seizing an opportunity to do things differently.
* Understand how to use blockchains and DeFi as a user.

# Benefits

* Autonomous, distributed environment with the opportunity to work collaboratively in a diverse team across the world.
* The scope to contribute to high impact work and really make a difference in a decentralized protocol.
* Chance to really challenge yourself whilst learning heaps of stuff in the process.
* Unlimited time off throughout the year to rest and recharge.
* Competitive compensation with stock options, experiencing growth from the initial phase.

Security

Canada

Smart Contracts Engineer

ChainSafe Systems is a blockchain R&D firm on a mission to realize the potential of Web3 infrastructure through sustainable, open-source development. Our vision is to create a world with organizations that empower people to build and innovate through blockchain agnostic tools and other distributed technologies.

We are global leaders in the industry, unique in our work across multiple blockchain ecosystems, and currently are pioneering technology and infrastructure related to Ethereum,, Polkadot and Filecoin. We are actively pursuing the development of our own product suite, having recently released Files and Storage, which allows users to upload and store files on IPFS and Filecoin with the goal of furthering development to provide a decentralized alternative to cloud storage.

ChainSafe is a unique company in a unique space, growing quickly and building a global reputation in this nascent space. Beyond offering experience across every major blockchain space to our team, we provide an open, inclusive, and supportive environment where we help folks reach their full potential as a human and as a professional.

# Here’s what you might want to know before reading on:

* Our stack is progressive and open-source and includes Go, Rust, and TypeScript.
* We spearhead ecosystem projects like Lodestar, Web3.js, Forest, Mina-rs, and Gossamer.
* We are global, remote-friendly, and open to contractors.
* Culture fit and alignment to our core values are extremely important to us. We are fueled by an immense intellectual curiosity of what technology can do and the impact it can have. You will thrive here if you are intensely driven by tackling technical challenges that no one else has solved yet and are inspired by the possibility of building the next generation of web infrastructure and decentralized systems.

# Responsibilities

* Proactively Research a wide range on edge blockchain technologies that are relevant to bridging techniques
* Play a key role in architectural and design decisions, building toward an efficient bridging solution for networks of different nature
* Facilitate development process over research done. Help developers during development and support cycles
* Identify, prioritize and execute tasks in the software development life cycle
* Write scalable, robust, testable, efficient, and easy to maintain code
* Follow latest security best practices
* Mentor junior engineers and do active code reviews
* Automate tasks through appropriate tools and scripts
* Document development phases and monitor systems

# Required Skills

* Be able to proactively dive into the novel territory and share knowledge on what you've learned
* Extensive knowledge of Ethereum network
* Experience with various blockchain protocols
* Deep knowledge in blockchain underlying cryptography
* Understanding of distributed systems, peer-to-peer systems.
* Practical experience and knowledge's in various DeFi’s
* Willing to research new technologies and possibilities for our product. Passion in writing documental reports and solution investigation based on research done.

# Bonus Skills

* Go, Rust is highly encouraged
* Typescript or JavaScript is a plus
* Substrate(Polkadot), Cosmos(Tendermint), Solana Knowledge
* Practical understandings of Bridges

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 Cultural Interview with one of our Project Managers
* Then, Candidates will be asked to complete a technical task that takes under 4 hours, but we provide up to 5 business days to complete
* Last, candidates will be invited to schedule a 60-minute interview with the Team Lead

Senior Blockchain Research Engineer

* Strong foundational understanding of Ethereum mechanics
* Mempool
* Transactions and Events
* Gas
* Solidity experience
* Experience writing and deploying Solidity code to Ganache, Kovan, and Mainnet
* Ability to write full test coverage using Waffle, Mocha, and Chai
* Knowledge of common security vulnerabilities and infamous hacks
* Knowledge of popular design patterns and mechanics used in top DeFi projects
* JavaScript (web3 / ethers) + NodeJS / ReactJS Full-Stack Experience
* Ability to create scrips for deploying and maintaining contracts
* Ability to pull on-chain data and send transactions
* Ability to create a working front-end to interface with smart contract code
* Experience integrating with Ethereum service providers
* Etherscan / Alchemy
* TheGraph.com
* Etc