We're looking for a Mobile App Engineer (iOS) to join Fullstack.
Fullstack Trade is building the only unified front-end trading app for retail crypto – perps, cross-chain spot, and prediction markets under one portfolio margin balance. No bridging, no fragmentation. Founded by Flood, creator of Insilico Terminal ($900B CEX volume, 90% market share), and Robin, operated a leading CEX and on-chain HFT firm. Launching Jan/Feb 2027.
You will
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Build Fullstack's first mobile trading app from zero: the full trading experience, not a "pocket" version.
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Work with live market data, complex order types, and WebSocket streams with reconnection logic.
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Design gesture-driven UI and fast interactive charts that fit a professional terminal on a small screen.
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Integrate native wallets, biometric auth, transaction signing, and on-device key storage.
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Own the full App Store release cycle and CI/CD.
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Lay down the mobile architecture future engineers will build on.
Requirements
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3+ years of iOS experience in Swift.
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Shipped a mobile app from zero to one, through App Store review to production.
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Real-time data and WebSockets experience.
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Strong UI/UX sensibility: wireframing, gesture-driven interfaces.
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High ownership: ready to lead mobile from scratch.
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You actively trade crypto or perps, or build trading side projects.
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On-site 5 days/week in SoHo, NYC.
Stack
- Swift, iOS, WebSockets, REST APIs, CI/CD, App Store.
Nice to have
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Fintech, trading, or real-time data mobile apps.
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Crypto-native app experience (wallets, exchanges).
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VC-backed startup experience.
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Public GitHub or App Store portfolio.
We offer
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Up to $300k/year salary + equity.
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Ownership of mobile from the first line of code.
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Small, fully on-site engineering team in SoHo, direct work with the founders.
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