Staff Software Engineer: Perpetuals

About the Company

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.

What you'll do

• 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

Salary