Rust Engineer - Trading Systems

As a Senior Rust Engineer in Capital Markets at Keyrock, you will own high-impact trading infrastructure, set technical direction in your domain, and drive continuous improvement in system performance, reliability, and operability. You join a highly profitable division within Keyrock, making a senior individual-contributor impact while collaborating with a global, fully-remote team. This role is open to candidates located in 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, drive automation of operational tasks, and help 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
• 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)
• Ability to make sound architectural decisions, articulate trade-offs clearly, and guide implementation across complex systems
• Full ownership mindset, delivering high-quality work and anticipating potential issues before they arise
• Initiative and problem-solving approach, making independent judgments and driving solutions
• Technical leadership skills to influence system design, raise engineering standards, and mentor other engineers
• Excellent communication skills and ability to collaborate within a fully remote global team

Nice to have

• Proficiency with Tokio for async Rust development
• Familiarity with agentic engineering tools and concepts: LLMs, MCP APIs, AI-First IDEs (such as Cursor or Claude Code), harness engineering, and workflow automation

What we offer

• A competitive salary package
• Flexible working hours and the opportunity to work remotely
• Autonomy to create your own entrepreneurial experience as part of a team in search of excellence

About Keyrock

Keyrock is a leading digital asset market maker and trading infrastructure provider founded in 2017. With over 200 team members across 42 nationalities and hubs in London, Brussels, Singapore, and Paris, Keyrock operates on more than 80 exchanges and provides services spanning market making, options trading, high-frequency trading, OTC, and DeFi trading desks. The company is a pioneer in adopting Rust for algorithmic trading and supports ecosystem growth through its Accelerator Program and liquidity initiatives in DeFi, RWA, and NFT protocols.