Senior Backend Engineer - MetaMask

US EU or Remote (excluding France Australia and Canada)

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.

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.

The MetaMask Wallet API Platform Team

Empowering developers to deliver great decentralized user experiences is at the heart of MetaMask’s purpose. From the beginning we have done so by providing the web with an API that allows any developer to turn their site or web-app into a decentralized app connected to the blockchain.

Currently the MetaMask Wallet API allows dApps to do things like: propose transactions to users access the address of the users current account use keys in MetaMask to help users encrypt and decrypt messages propose to users that they sign specific messages access the connected node/provider and call all methods on the Ethereum RPC API and to propose that users add and switch to a specific network. We enhance and expand this list of capabilities and build tools to help other teams build new capabilities themselves. To get a fuller picture of the current API you can check out our documentation https://docs.metamask.io/wallet/concepts/wallet-api/

By improving and expanding this API we can make entirely new types of decentralized user experiences possible. There is also much work to do to make this API accessible for the many new developers joining our space.

We are hiring engineers to join our Wallet API Platform team and help us build the platform on which the world’s most exciting dapps will be built.

What you’ll do

• Build and maintain Wallet API infrastructure and tooling.

• Help to manage and govern a pipeline of proposed new APIs.

• Work with partners and standards bodies across the Web3 ecosystem to shape wallet API standards.

Would be great if you brought this to the role

We are looking for a senior software engineer who is:

• Growth-minded and collaborative and who thrives in an environment with some ambiguity autonomy and the freedom to experiment.

• Proficient and thoughtful with asynchronous and synchronous communication and with giving and receiving feedback

• Supportive of their team’s collective performance and growth

• Successfully working in a fully remote environment individually and within a team

• Respectful patient and empathic in every interaction and relationship with their coworkers and the community

• Able to work towards technical clarity amidst competing viewpoints

• Enthusiastic and unwavering on shipping high-quality code

• Interested in working with partners across the Web3 ecosystem on shared Wallet API standards

The Wallet API Platform team carries an important mission to craft and maintain the best API for developers so that MetaMask can continue to grow with the wider Web3 ecosystem. The senior software engineer role is a critical part of this team. They would be responsible for creating and managing the API that all MetaMask developers are using. As web3 evolves the API needs to evolve with the larger ecosystem. This requires a team of highly dynamic and agile software engineers to serve MetaMask’s developer community.

Because of the complexity and nascency of web3 most of our API have a very long lifecycle after being made publicly available. The engineer who takes on this role will be the guardian of a high-quality API with a long lifecycle in a rapidly evolving ecosystem. This engineer must have a long-term mindset when planning and designing the API as well as introducing any new major change.

Technical requirements:

• 4 years of JavaScript TypeScript and Node.js experience

• 2 years of experience working on a team of at least 3 other engineers with a strong focus on peer reviews

• 1 year of working experience with building/deploying dapps and/or web3/ethers.js libraries

• 2 years of experience with architecting implementing and/or managing externally-facing APIs (used by developers not belonging to the same organization)

• 2 years of experience managing an existing codebase

• 1 year of experience owning and managing unit integration end-to-end tests and/or testing frameworks/strategies

• 1 year of experience with JSON-RPC Swagger and/or OpenAPI

Bonus points:

• Mobile development experience

• Security engineering

• Involvement in EIP authoring or review processes

• Browser APIs

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.