Fullstack Engineer - MetaMask (Delegation)
Location: US, EU or Remote (excluding France)
Consensys is the leading blockchain and web3 software company founded by Joe Lubin, CEO of Consensys and Co-Founder of Ethereum. Since 2014, Consensys has been at the forefront of innovation, pioneering technological developments within the web3 ecosystem.
Through our product suite, including the MetaMask platform, Infura, Linea, Diligence, and our NFT toolkit Phosphor, we have become the trusted collaborator for users, creators, and developers on their path to build and belong in the world they want to see.
Whether building a dapp, an NFT collection, a portfolio, or a better future, the instinct to build is universal. Consensys inspires and champions the builder instinct in everyone by making web3 universally easy to use and develop on.
Our mission is to unlock the collaborative power of communities by making the decentralized web universally easy to access, use, and build on.
You’ll get to work on the tools, infrastructure, and apps that scale these platforms to onboard one billion participants and 5 million developers. You’ll be constantly exposed to new concepts, ideas, and frameworks from your peers, and as you work on different projects — challenging you to stay at the top of your game. You’ll join a network of builders that reaches the edge of our ecosystem. Consensys alumni have moved on to become tech entrepreneurs, CEOs, and team leads at tech companies.
About MetaMask
MetaMask is the gateway to the decentralized web. As both a crypto wallet and a development platform, our tools empower millions of users worldwide to create communities, play games, access financial services, make payments, invest, and more. With over 30 million monthly active users, we’re expanding the boundaries of what’s possible in Web3.
The Delegation Framework is a critical component of this mission. It enables developers to create flexible, secure, and composable permission structures on Ethereum and other EVM-compatible chains. By joining MetaMask’s Delegation team, you’ll help bring this framework to new heights, scaling it for millions of users across diverse use cases and platforms.
What You’ll Do
As a Fullstack Engineer on the Delegation team, you’ll focus primarily on developing, maintaining, and scaling our TypeScript/Viem Delegation Toolkit SDK and building our Gator Permissions in the MetaMask wallet. You will:
- Build and enhance the Delegation Toolkit SDK: Design, implement, and maintain a robust, developer-friendly SDK built on TypeScript and Viem that enables seamless integration of delegation permissions across web3 applications.
- Develop and innovate with MetaMask Snaps: Collaborate closely with MetaMask extension and Snap teams to build advanced features within the Gator Permissions Snap, ensuring a secure and intuitive user experience.
- Ensure cross-platform compatibility: Create solutions that seamlessly integrate across multiple MetaMask platforms, including browser extensions, mobile apps, and portfolio dApps.
- Collaborate and contribute to adoption: Engage closely with internal teams, partners, and the broader developer community to promote adoption and integration of the Delegation Framework and Toolkit SDK.
- Maintain excellence and usability: Write clear documentation, provide support to developers using the SDK, and create exemplary tutorials and examples that accelerate adoption.
What You Bring
We’re looking for an experienced, collaborative engineer who shares our passion for making Web3 accessible and impactful:
Required Skills & Experience
- 5+ years of fullstack engineering experience, with a strong emphasis on frontend and SDK development.
- Extensive experience in modern JavaScript and TypeScript development, with deep knowledge of frameworks such as Viem and React.
- Hands-on experience developing and maintaining SDKs and libraries used by third-party developers.
- Experience with Ethereum/EVM-based blockchain technologies, Web3.js, wagmi, ethers.js, or similar libraries.
- Strong understanding of web security, blockchain fundamentals, and decentralized application architecture.
- Proven experience designing simple solutions to complex problems.
- Demonstrable knowledge of modern software development practices including continuous integration, testing, and agile methodologies.
- Exceptional communication skills in English, both written and verbal.
- Ability to independently navigate a fast-paced, remote environment and proactively engage with teammates and partners.
Bonus Points
- Familiarity with MetaMask’s Delegation Framework or other permission systems.
- Experience working with account abstraction standards such as ERC-4337.
- Experience or interest in cross-chain integrations and technologies.
- Proven experience building or working with browser extensions and MetaMask Snaps.
- Previous open-source contributions or active involvement in developer communities.
Don't meet all the requirements? Don't sweat it. We’re passionate about building a diverse team of humans and as such, if you think you've got what it takes for our chaotic-but-fun, remote-friendly, start-up environment—apply anyway, detailing your relevant transferable skills in your cover letter. While we have a pretty good idea of what we need, we're ready for you to challenge our thinking on who needs to be in this role.
The salary range for US-based candidates only will be determined throughout the interview process depending on experience and skills.
In the rapidly evolving Web3 space, we believe that everyone is a builder. This expansive paradigm requires a range of backgrounds, talents, skills, and experiences to influence and shape the future. At Consensys, this diversity fuels our ability to shift control and redefine the realm of possibility. We are committed to ensuring that our technology empowers people and communities with economic and political agency through decentralized technologies. We welcome the range of perspectives and differences and celebrate them. We're excited to see how your unique skills as a builder can contribute to our vision, drive innovation, and help us shape a more inclusive Web3.
Consensys is an equal opportunity employer. All employment decisions are made without regard to race, color, national origin, ancestry, sex, gender, gender identity or expression, sexual orientation, age, genetic information, religion, disability, medical condition, pregnancy, marital status, family status, veteran status, or any other characteristic protected by law. Consensys is aware of fraudulent recruitment practices and we encourage all applicants to review our best practices to protect yourself which can be found (https://consensys.io/careers/best-practices-to-avoid-recruitment-fraud/).
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