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. 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. What you’ll do This role is specifically within the Predict team, which is focused on integrating Prediction Markets directly into the MetaMask platform. As a Senior Software Engineer on this team, you will be instrumental in building the core infrastructure and user-facing features that enable millions of users to engage with prediction markets securely and intuitively within their wallet. * Designing and implementing the front-end components and user experience for prediction market interactions across MetaMask clients. * Developing robust and scalable backend services and APIs to fetch real-time market data, manage user positions, and facilitate transaction signing. * Ensuring seamless and secure integration with on-chain prediction market protocols. * Optimizing the performance and security of all Predict features, handling real-time data feeds and high-volume transaction throughput. 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 Would be great if you brought this to the role * Experience with prediction markets, token trading and/or sports betting * Experience with DeFi protocols, especially prediction markets * 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 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) $156,884—$220,520 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. MetaMask is an equal opportunity employer. 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. MetaMask is aware of fraudulent recruitment practices and we encourage all applicants to review our best practices to protect yourself, which can be found on our page. MetaMask may use artificial intelligence (AI) tools to support parts of our recruitment process, such as reviewing applications, screening resumes, or conducting initial candidate assessments. These tools are designed to assist our recruiting team and improve efficiency — they do not replace human judgment. A human recruiter or hiring manager reviews every candidate, and all final hiring decisions are made by people, not AI. It is a requirement of employment in this position that applicants may be required to submit to background and identity verification checks, including but not limited to employment, education, criminal record checks, and other such checks as determined necessary by the company.

Senior Software Engineer - Predict

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