We're looking for a Backend Systems Engineer 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 risk and liquidation engines that manage risk and capital efficiency in volatile markets.
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Design blockchain state machines powering trading, settlement, and risk operations.
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Build consensus and coordination services that keep state consistent across async processes.
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Process live market data: WebSocket streams and time-sensitive workflows across trading venues.
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Ship high-performance REST and WebSocket APIs with millisecond-level response times.
Requirements
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2–4 years of backend experience with production Rust.
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Real-time, high-throughput backend services (systems-level, not pipeline work).
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Async programming with Tokio.
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Relational, time-series, and key-value databases.
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Startup or VC-backed company experience.
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Active public GitHub with Rust or C projects outside of work.
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Genuine passion for trading: you actively trade perps or prediction markets, run trading bots, or build on-chain.
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US work authorization: TN and H1B transfers supported (not in year 3 or 6), no OPT/F1.
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On-site 5 days/week in NYC or SF.
Stack
- Rust, Tokio, distributed systems, blockchain, REST APIs, WebSockets, Docker.
Nice to have
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Fintech, crypto, or HFT background.
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Low-latency or trading systems experience.
We offer
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Up to $300k/year salary + equity.
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Small team of builders, direct work with the founders.
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NYC office or SF hacker house and Paradigm offices.
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