Staff Software Engineer: Perpetuals

<div class="content-intro"><p><em><strong>Please note that we are unable to consider applications from candidates based in France, Italy, or Germany for this role.</strong></em></p>
<p>Money is moving onto the internet, and the shift has a name: <strong>Open Money. </strong>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.&nbsp; Join a remote-first, global team rebuilding how money works: a problem that touches everyone, every day.</p></div><h2>What you'll do</h2>
<p>As a Staff Software Engineer, you will:</p>
<ul>
<li>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.</li>
<li>Set technical direction and standards for trading-critical features: precision/decimal handling, state consistency under high-frequency updates, and resilience to feed/connectivity failures.</li>
<li>Drive cross-team technical alignment with other experience teams and backend/protocol integration teams to ship complex, multi-team projects.</li>
<li>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.</li>
<li>Partner with the Engineering Manager on prioritization, providing the technical judgment that shapes what gets built and in what order.</li>
<li>Mentor senior and mid-level engineers, run design/architecture reviews, and raise the technical bar through example, documentation, and code review.</li>
<li>Represent Perpetuals engineering in cross-functional planning with Product, Design, and other engineering leads.</li>
</ul>
<h2>Requirements:</h2>
<ul>
<li>8+ years working with web and mobile-based technologies</li>
<li>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.)</li>
<li>Experience with real-time data systems (WebSockets, streaming price feeds, optimistic UI updates) and building resilient UX around unreliable network conditions</li>
<li>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</li>
<li>Hands-on experience with React and React Native</li>
<li>Extensive experience with modern Javascript (ES6/TypeScript/etc.)</li>
<li>Experience with blockchain fundamentals across multiple blockchain architectures</li>
<li>Strong working knowledge developing cross platform/browser compatibility</li>
<li>Experience working in an agile development team</li>
<li>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</li>
<li>Experience consuming and building APIs</li>
<li>A demonstrable understanding of Continuous Integration</li>
<li>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.)</li>
</ul>
<h2>Bonus Points:</h2>
<ul>
<li>Direct experience integrating with perpetuals/derivatives protocols (e.g., Hyperliquid, Lighter, or similar) or building trading infrastructure.</li>
<li>Experience with cross-chain bridges, transaction lifecycle and/or interoperability solutions</li>
<li>Experience working in a decentralized, distributed team</li>
<li>Previous experience working in Web3</li>
<li>Product knowledge about the Web3 wallet space</li>
<li>Mobile experience (React Native, Objective C, Swift)</li>
</ul>
<h2>Other skills to demonstrate:</h2>
<ul>
<li>Excellent verbal and written communication in English</li>
<li>Teamwork, flexibility, initiative, communication and organization</li>
<li>Willingness to constantly learn &amp; improve, challenging yourself to stay at the top of your game</li>
</ul>
<p><span style="font-weight: 400;">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</span><span style="font-weight: 400;">.</span></p><div class="content-conclusion"><p class="isSelectedEnd">