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.