Senior Rust Backend Engineer

职位要求 / 描述

<h2>About Us</h2> <p>In partnership with one of the largest financial conglomerates, we aim to bring the majority of Japanese equities on-chain, creating a secure, transparent, and high-performance trading infrastructure that can support institutional volumes while remaining accessible to retail participants. We are building a next-generation decentralized exchange with a fully on-chain order book. Our system is built with a custom state transition function and consensus layer, purpose-designed for high-performance, low-latency trading. The goal is to deliver a trustless platform that matches the speed and efficiency of traditional trading engines while providing full transparency by running execution as close as possible to the blockchain itself.</p> <h2>Position Overview</h2> <p>We are seeking a <strong>Senior Rust Backend Engineer</strong> experienced in building <strong>high-performance, reliable trading APIs (HTTP &amp; WebSocket)</strong>. You will be responsible for designing, implementing, and optimizing the backend services that power our exchange interfaces - ensuring low latency, resilience, and correctness under load.</p> <p>You’ll work on high-throughput, real-time systems that handle order and trade data ingestion, manage live WebSocket feeds, and maintain internal state consistency from streaming market events. The ideal candidate is both a strong Rust engineer and a system thinker, capable of reasoning about concurrency, data flow, and observability in production environments.</p> <p>This role offers an opportunity to shape the architecture of our trading backend at an early stage, working alongside a distributed team of seasoned engineers building next-generation financial infrastructure.</p> <h2>Key Responsibilities</h2> <ul> <li class="p1"><strong>Own the architecture and technical direction</strong> of high-performance trading APIs (HTTP &amp; WebSocket) supporting low-latency order entry, market data distribution, and account state updates.</li> <li class="p1"><strong>Lead the design and implementation of structured concurrency</strong> using the Tokio runtime, defining best practices for task lifecycle management, cancellation semantics, backpressure, and graceful degradation under load.</li> <li><strong>Develop and maintain real-time state ingestion pipelines</strong>: <ul> <li>Process append-only logs (e.g., trades, order updates, book diffs).</li> <li>Rebuild local states efficiently using snapshot + diff application.</li> </ul> </li> <li><strong>Model trading-related data structures</strong>, including orders, fills, trades, positions, funding, and liquidation logic.</li> <li><strong>Implement WebSocket connection logic</strong>, including upgrade handling, frame parsing, and data fanout for subscribed clients.</li> <li><strong>Design observable backend systems</strong> with rich metrics, structured logging, and distributed tracing for performance insights and failure analysis.</li> <li>Collaborate with system and infrastructure engineers to continuously improve performance, scalability, and fault tolerance.</li> <li>Write comprehensive unit, integration, and load tests to ensure stability under production conditions.</li> </ul> <h2>Requirements</h2> <p><strong>Rust Expertise</strong></p> <ul> <li class="p1">5+ years of professional backend engineering experience, with <strong>3+ years of Rust in production</strong>. <ul> <li>Strong experience with the <strong>Tokio</strong> async runtime and concurrent programming patterns.</li> <li>Deep understanding of <strong>structured concurrency</strong> and robust handling of spawned task cancellation.</li> <li>Hands-on experience with <strong>HTTP and WebSocket frameworks</strong> such as <strong>Hyper</strong> or similar.</li> </ul> </li> </ul> <p><strong>Trading Literacy</strong></p> <ul> <li>Solid understanding of <strong>CEX/DEX systems and trading models</strong>.</li> <li>Familiarity with <strong>data modeling for trading entities</strong> (orders, trad

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