Senior Software Engineer, Trading Systems (Mobile) at Gemini Trust Co. answer
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Job Description
<p><strong>About the Company</strong></p>
<p>Gemini is a global crypto and Web3 platform founded by Cameron and Tyler Winklevoss in 2014, offering a wide range of simple, reliable, and secure crypto products and services to individuals and institutions in over 70 countries. Our mission is to unlock the next era of financial, creative, and personal freedom by providing trusted access to the decentralized future. We envision a world where crypto reshapes the global financial system, internet, and money to create greater choice, independence, and opportunity for all — bridging traditional finance with the emerging cryptoeconomy in a way that is more open, fair, and secure. As a publicly traded company, Gemini is poised to accelerate this vision with greater scale, reach, and impact.</p>
<p><span style="font-weight: 400;"><strong>The Department: Trading Systems</strong></span></p>
<p><span style="font-weight: 400;"><strong>The Role: Senior Software Engineer (Mobile)</strong></span></p>
<p class="p1">Our advanced trading platform sits at the intersection of crypto, equities, and prediction&nbsp;markets. We're looking for a mobile-first engineer to own trading experiences across React&nbsp;Native and native mobile (iOS/Android), with the range to contribute to web front-end surfaces&nbsp;and pick up backend work as needed. You'll build order entry, position management, and&nbsp;real-time market data UI at wire speed, working across the stack as the platform demands.</p>
<p><span style="font-weight: 400;"><strong>Responsibilities:</strong></span></p>
<ul>
<li class="p1">Build and maintain mobile trading experiences end-to-end: market browsing, order&nbsp;placement, portfolio views, and settlement flows — across React Native and native iOS/Android.</li>
<li class="p1">Architect performant, real-time UI for streaming market data (orderbook, price charts, position P&amp;L), choosing the right mobile approach for the job.</li>
<li class="p1">Extend core trading UI components to web (React/TypeScript) where the platform needs shared or cross-surface functionality.</li>
<li class="p1">Collaborate with backend engineers on gRPC, WebSocket, and FIX integrations that power live trading; take on backend contributions (Go, Java, or Scala) as scope requires.</li>
<li class="p1">Partner with product and design to shape UX for new contract categories (crypto, equities, prediction markets) across mobile and web.</li>
<li class="p1">Scope and implement solutions independently, making informed architecture and platform tradeoffs.</li>
<li class="p1">Own projects end to end — design through deliv