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# Rust Engineer

- **Company:** ARCUS
- **Location:** San Francisco, CA, United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Databases, Software Debugging, Distributed Systems, Memory Management, Monitoring of Systems, Performance Tuning, Blockchain, Software Engineering, WebSocket, Concurrency, State Machines, Backend, Asynchronous Programming, Docker
- **Published:** November 7, 2026
- **Apply:** https://www.juju.com/job/28_25303_3c077d337bd1ff334ada7af548123c61

## About the Role

* 2-4 years of backend software engineering experience.
 * Production experience with Rust is a must and a strong understanding of ownership, lifetimes and asynchronous programming.
 * Solid systems knowledge across networking, databases, concurrency and performance optimisation.
 * Experience building asynchronous services; familiarity with Tokio is particularly relevant.
 * Experience developing REST or WebSocket APIs and working with distributed systems.
 * A performance-driven mindset and an interest in building reliable, latency-sensitive infrastructure.
 * Comfort deploying and debugging production services, with experience using Docker and monitoring tools.
 * The ability to collaborate closely with a small, technically focused team.

## Description

You'll take ownership of critical backend systems that support real-time trading, risk management and execution across multiple venues.

 * Risk & liquidation engines: Develop systems that manage exposure, optimise capital efficiency and respond to rapidly changing market conditions.
 * Blockchain state machines: Design and implement the systems underpinning trading, settlement and risk operations.
 * Distributed systems: Build asynchronous services that maintain consistent state using coordination, voting and consensus mechanisms.
 * Real-time market data: Process high-throughput event streams, manage WebSocket connections and coordinate time-sensitive actions across trading venues.
 * High-performance APIs: Develop REST and WebSocket APIs designed for millisecond-level response times.
 * Performance engineering: Profile, debug and optimise production Rust systems, making informed decisions around concurrency, memory allocation and throughput.