Staff Software Engineer: Perpetuals
What you'll do
As a Staff Software Engineer, you will:
Own the technical architecture and roadmap for MetaMask's Perpetuals experience across Extension and Mobile — from real-time price/position data flows to order execution and margin/liquidation UX.
Set technical direction and standards for trading-critical features: precision/decimal handling, state consistency under high-frequency updates, and resilience to feed/connectivity failures.
Drive cross-team technical alignment with other experience teams and backend/protocol integration teams to ship complex, multi-team projects.
Identify and de-risk the hardest technical problems on the roadmap before they become blockers; make build-vs-buy and architecture trade-off calls for the domain.
Partner with the Engineering Manager on prioritization, providing the technical judgment that shapes what gets built and in what order.
Mentor senior and mid-level engineers, run design/architecture reviews, and raise the technical bar through example, documentation, and code review.
Represent Perpetuals engineering in cross-functional planning with Product, Design, and other engineering leads.
Requirements:
8+ years working with web and mobile-based technologies
Experience building trading, financial, or other correctness-critical systems where precision, race conditions, and state consistency carry real financial risk (margin, settlement, order matching, payments, etc.)
Experience with real-time data systems (WebSockets, streaming price feeds, optimistic UI updates) and building resilient UX around unreliable network conditions
Track record of leading technical initiatives that span multiple teams or codebases without direct reporting authority — demonstrated Staff-level scope, not just Senior-level execution
Hands-on experience with React and React Native
Extensive experience with modern Javascript (ES6/TypeScript/etc.)
Experience with blockchain fundamentals across multiple blockchain architectures
Strong working knowledge developing cross platform/browser compatibility
Experience working in an agile development team
Experience developing medium to large-scale applications across the entire stack with minimal tech debt through sensible abstractions, testing, linting, and adherence to coding/web standards
Experience consuming and building APIs
A demonstrable understanding of Continuous Integration
Strong understanding of security risks specific to financial/trading products — transaction integrity, race conditions in state updates, precision/rounding bugs — in addition to standard web security threats (XSS, CSRF, etc.)
Bonus Points:
Direct experience integrating with perpetuals/derivatives protocols (e.g., Hyperliquid, Lighter, or similar) or building trading infrastructure.
Experience with cross-chain bridges, transaction lifecycle and/or interoperability solutions
Experience working in a decentralized, distributed team
Previous experience working in Web3
Product knowledge about the Web3 wallet space
Mobile experience (React Native, Objective C, Swift)
Other skills to demonstrate:
Excellent verbal and written communication in English
Teamwork, flexibility, initiative, communication and organization
Willingness to constantly learn & improve, challenging yourself to stay at the top of your game
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.