Senior Software Engineer

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 aims to create a thriving engineering organization that supports the well-being of our engineers while empowering them to do work they are proud of and enjoy. We strive for an environment that gives our people high trust and autonomy, while also facilitating collaboration, communication and camaraderie among teams and teammates. We aspire to build a diverse engineering team, inclusive to people from all backgrounds and demographics. It is also of great importance to us that working at MetaMask is an experience that catalyzes career growth and learning.

At MetaMask, we’re building the tools and infrastructure to empower users across the globe to onboard into Web3. The  RAMPS team enables seamless fiat on/off-ramping — helping users transition between traditional finance and decentralized applications. This is one of the most mission-critical and revenue-impacting surfaces in MetaMask, and we’re expanding our technical leadership to support a growing roadmap.

What you’ll do

As a senior engineer on the RAMPS team, you will:

• Own the entire lifecycle of features and projects — from technical design through to launch and production monitoring

• Build and ship user-facing features in our React Native mobile application

• Contribute across the full stack: React Native mobile frontend, Node.js/NestJS backend API, and shared TypeScript libraries

• Integrate third-party payment providers and financial services APIs

• Improve application performance, test coverage, and developer experience

• Onboard and mentor other engineers through code reviews and pairing

• Identify and suggest areas of future work for yourself and the team

• Collaborate with Product, Design, QA, and Backend Engineering partners to deliver on the team's roadmap

• Participate in code reviews, sprint ceremonies, on-call rotations, and the hiring process

• Leverage AI-assisted development tools (Cursor, Claude Code, or equivalent) as a core part of your daily engineering workflow

Would be great if you brought this to the role

As a senior engineer on the RAMPS team, you will:

• 3+ years of experience in software engineering with a focus on mobile or full-stack development

• Demonstrable proficiency with React Native (2+ years)

• Proficiency in TypeScript across the stack (frontend and backend)

• Backend experience with Node.js (NestJS, Express, or similar frameworks)

• Experience with Web3 fundamentals — wallets, blockchain transactions, and the Ethereum ecosystem

• Experience integrating third-party APIs, particularly in payments or financial services

• Active, proficient use of AI-assisted development tools (Cursor, Claude Code, GitHub Copilot, or equivalent). We expect the majority of your development workflow to be AI-augmented — this is a core engineering practice on our team, not optional.

• Strong communication and collaboration skills in a remote-first environment

• Comfort working in agile environments with cross-functional teams

• Commitment to clean code practices, testing, and maintainable software

• Proactive and self-driven to be successful working remotely

• Understands the business context their code supports and uses that knowledge to influence prioritization and trade-offs

Bonus Points

• Prior experience at fintech or payments companies (e.g., Stripe, Revolut, Robinhood, Square)

• Experience working on fiat on/off-ramp systems, KYC/AML flows, or payment rail integrations

• Experience working in large, multi-team codebases with shared libraries and modular architecture

• Experience building complex, data-rich mobile UIs with async data fetching, loading states, and error handling

• Demonstrable proficiency with Android or iOS platform (1+ years)

• Contributions to open-source projects

• You're a MetaMask user

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.