Staff Software Engineer - MetaMask

Our mission is to unlock the collaborative power of communities by making Web3 universally easy to use, access, and build on.

Working with Consensys puts you at the forefront of an evolving paradigm, transforming our society for the better. We fundamentally believe blockchain is the next generation of technology that can lay the foundation for a more just and equitable society. 

Blockchain tech is just over 10 years old. Ethereum itself is still a toddler and we’re far from reaching our full potential. You’ll get to work on the tools, infrastructure, and apps that scale these platforms to billions of users. 

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 entrepreneurs and technologists 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.

What you’ll do

As a Staff Engineer on the Extension Platform Team, you will contribute to the development and maintenance of the platform architecture that powers MetaMask’s browser extension. You’ll work on foundational systems, state management, integrations, and quality enablement while collaborating with the team on complex and impactful projects. While this role involves significant technical leadership, it is a highly collaborative position, working alongside other engineers to help drive the future of the platform.

Responsibilities

• Platform Foundations: Contribute to the evolution and maintenance of the core architecture of the MetaMask extension, including browser API integration, JavaScript execution contexts, and communication between the extension and decentralized applications.
• State Management: Help design scalable and efficient state management systems, ensuring robust data persistence and seamless integration with controllers and UI layers.
• Platform Features and Integrations: Build and maintain platform features that MetaMask’s product engineers use to deliver impactful end-user experiences, such as translations, metrics, error handling, privacy controls, and feature flags
• Quality Enablement Systems: Help improve automated testing frameworks, CI/CD pipelines, and other quality-focused tools to ensure the delivery of reliable and high-performing releases.
• Build, CI, and Release: Support the ongoing enhancement of the build and release systems, ensuring smooth deployment processes and optimizing workflows for various environments.
• Collaboration and Mentorship: Work collaboratively with other engineers, sharing knowledge and providing guidance when necessary to improve overall technical standards and development practices.
• Problem Solving and Delivery: Play a key role in addressing critical business challenges, contributing to the timely resolution of high-impact projects and production issues.
• Code Review: consistently review your peer’s code, providing feedback on architecture, API design, code correctness, quality and maintainability

Would be great if you brought this to the role

• Strong experience working with production-level systems and architectures, with a focus on browser-based applications and state management.
• Expertise in JavaScript/TypeScript and Node.js
• Deep familiarity with browsers and browser APIs
• Proven ability to contribute to complex and ambiguous projects with high business impact, balancing long-term goals with short-term needs.
• Strong understanding of CI/CD pipelines, automated testing frameworks, and developer tooling.
• A desire to build high quality, maintainable, robust, well tested and debt-free software
• Proven ability to efficiently tackle difficult bugs in a structured manner
• Experience in making pragmatic trade-offs between technical debt and delivering business value.
• Ability to work effectively within a collaborative team, influencing best practices and driving positive technical outcomes.

Would be nice if you have these things too but as strongly needed

• Experience developing browser extensions
• Experience with Redux or similar state management libraries.
• Understanding of privacy and security best practices in Web3 applications.
• Familiarity with metrics and monitoring systems (e.g., Sentry, Segment).

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.

Consensys is an equal opportunity employer. We encourage people from all backgrounds to apply. We are committed to ensuring that our technology is made available and accessible to everyone. 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/).