Rust Engineer - Trading Systems

As a Senior Rust Engineer at Keyrock, you take ownership of high-impact trading infrastructure within the Capital Markets division, setting technical direction and driving continuous improvement in system performance, reliability, and operability. You join a highly-profitable team within a leading market maker trading on more than 80 exchanges, where you will make a senior individual-contributor impact while collaborating with a global, fully-remote team across European time zones.

What you'll do

• Design, develop, and optimise low-latency, mission-critical trading systems
• Own key trading stack components end-to-end from architecture through to production operation
• Collaborate closely with quants, traders, and engineers to deliver solutions that improve trading performance and resilience
• Maintain and evolve trading infrastructure with a focus on performance, stability, observability, and operational excellence
• Troubleshoot complex production issues across exchange connectivity, execution, and market data handling
• Drive engineering standards through technical leadership, code reviews, and mentoring
• Leverage AI-assisted workflows and drive automation of operational tasks to evolve the team's agentic tooling
• Contribute to functional, component, and production-readiness testing for critical trading components

What you bring

• Production-grade Rust experience building high-performance, concurrent systems; proficiency with Tokio is a strong advantage
• Hands-on experience in a systematic trading environment (HFT, Market Making, Quantitative Trading, or similar), with solid understanding of execution, market data, and operational risk
• Strong AWS and Linux expertise, including cloud infrastructure trade-offs for latency-sensitive workloads, shell scripting, debugging, and production troubleshooting
• Proficiency in Python or other scripting languages for strategy development, automation, and operational tooling
• Deep familiarity with trading system protocols (FIX, REST, WebSocket), exchange connectivity, and market data feeds
• Solid grasp of low-latency networking: TCP/UDP, packet and latency path analysis, dedicated network infrastructure, and kernel bypass techniques (DPDK)
• Familiarity with agentic engineering tools and concepts: LLMs, MCP APIs, AI-First IDEs (e.g. Cursor, Claude Code), harness engineering, and workflow automation
• Ability to make sound architectural decisions, articulate trade-offs clearly, and guide implementation across complex systems
• Ownership mindset: take full responsibility for your work, deliver high-quality service, meet deadlines, and proactively address potential issues
• Initiative and problem-solving approach: drive solutions independently and think entrepreneurially about technical challenges
• Technical leadership capability to influence system design, raise engineering standards, and mentor other engineers
• Curiosity and continuous desire to improve your technical skills and stay ahead of industry trends
• Excellent communication skills and ability to collaborate within a fully remote global team

What we offer

• A competitive salary package
• Autonomy in your time management thanks to flexible working hours and remote work opportunity
• The opportunity to be part of a team in search of excellence and create your own entrepreneurial experience

About Keyrock

Keyrock is a leading market maker in the digital asset space, trading on more than 80 exchanges with services spanning market making, options trading, high-frequency trading, OTC, and DeFi trading desks. Founded in 2017, the company has grown to over 200 team members across 42 nationalities, with hubs in London, Brussels, Singapore, and Paris. Keyrock is a pioneer in adopting Rust for algorithmic trading and actively supports Web3 growth through its Accelerator Program and liquidity provision to DeFi, RWA, and NFT protocols.