Please note that we are unable to consider applications from candidates based in France, Italy, or Germany for this role.

Money is moving onto the internet, and the shift has a name: Open Money. This is money that is open, portable, agentic, and owned by you. MetaMask spent the last ten years building it; with 100M+ downloads, users in ~190 countries, and trillions in cumulative transaction volume, it's the most trusted self-custodial financial platform on the internet. Now we're building the operating system for your money: one place to hold, move, grow, and use anything you own. Join a remote-first, global team rebuilding how money works: a problem that touches everyone, every day.

What you'll do

As a Senior Software Engineer, you will:

Architect, build, and maintain features related to digital assets across MetaMask Clients, including ERC-20 tokens, NFTs, Token Lists, and Token Detail Pages
Develop and support core wallet controllers that manage asset state and data throughout the MetaMask ecosystem
Expand asset support to include emerging standards such as Real World Assets (RWAs)
Help create intuitive, efficient, and secure Web3 interactions that delight users
Collaborate with product managers, designers, and other engineers to deliver high-quality features
Participate in code reviews and help maintain high code quality standards

Requirements

3+ years working with mobile-based technologies
3+ years building websites and/or applications
Experience with React and React Native
Strong knowledge of modern Javascript (ES6/TypeScript/etc.)
Familiarity with blockchain fundamentals and Web3 integration
Working knowledge of cross platform/browser compatibility
Experience working with APIs and middleware services
Experience working in an agile development team
Experience developing applications with clean code practices, testing, and adherence to coding standards
Understanding of web-based security considerations

Bonus Points

Experience with token standards (ERC-20, ERC-721, ERC-1155, RWAs) and token list management
Experience with DeFi protocols, token swaps, or fiat on/off ramps
Knowledge of financial products in the digital space
Interest in blockchain technologies and Web3
Basic understanding of cryptography principles
Experience working in distributed teams
Previous experience working in Web3
Familiarity with the Web3 wallet ecosystem
Experience with performance optimization

Other skills to demonstrate

Good verbal and written communication in English
Teamwork, flexibility, and organization
Eagerness to learn and grow your technical skills
Ability to balance technical quality with business needs and user experience

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 listed for this role applies to US-based candidates only. Compensation for candidates based outside the US (including Canada, EMEA, and LATAM) will be determined based on location, experience, and skills during the interview process, and may differ from the listed US range.

US pay range (not including bonus, equity or other benefits)

$1—$1 USD

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 MetaMask, 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 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.