Senior Software Engineer - MetaMask (Networks)

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

We’re building for a future where the internet and world economy empowers people through interactions based on consent, privacy, and free association. Where both communities and individuals flourish. To accomplish that, we’re working hard to make web3 accessible for everyone around the world.

MetaMask is both a crypto wallet and a gateway to the decentralized web. Our tools help people create communities, play video games, access financial services, make payments, invest in assets, protect against economic turmoil, and more. Our browser extension and mobile platforms meet the needs of millions of users and developers across the world.

Originally a humble key manager, today MetaMask serves over 30 million monthly active users as a decentralized application development platform, an aggregator of decentralized cryptocurrency exchanges, and a decentralized identity manager.

The Networks team is responsible for making blockchain connectivity inside MetaMask feel invisible, reliable, and trustworthy—no matter which chain a user is interacting with. This includes ownership of EVM and non-EVM network connectivity, network switching, chain discovery, RPC configuration, performance and reliability, safety, L2s, custom networks, and the speed at which MetaMask can safely support new networks.

As a Senior Software Engineer, you will work on the team that owns the execution of MetaMask’s network layer—one of the most critical and complex parts of the wallet. You will shape how MetaMask scales across emerging EVM chains and key non-EVM ecosystems, ensuring network expansion aligns with MetaMask’s broader product and business strategy while maintaining best-in-class reliability and user trust.

What you’ll do

• Build and enhance MetaMask's network support for both EVM and non-EVM chains. 

• Implement user-centric solutions across MetaMask Clients including Extension, Mobile, and Web

• Contribute to backend APIs and middlewares that power MetaMask’s network experiences.

• 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

Would be great if you brought this to the role

• 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 in-app marketing and engagement strategies, including push notifications, carousel banners, and in-app modals.

• 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.

It is a requirement of employment in this position that applicants will be required to submit to background checks including but not limited to employment, education and criminal record checks. Further details will be provided to applicants that successfully meet the criteria for the position as determined by the company in its sole discretion. By submitting an application for employment, you are acknowledging and consenting to this requirement.