Rust Engineer - Trading Systems

As a Senior Rust Engineer at Keyrock, you will take ownership of high-impact trading infrastructure in our Capital Markets division, setting technical direction and driving continuous improvement in system performance, reliability, and operability. You will join a highly-profitable division within Keyrock, where you will make 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 and agentic engineering principles to automate operational tasks and 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, with strong proficiency in Tokio
• Hands-on experience in a systematic trading environment (HFT, Market Making, Quantitative Trading, or similar), with a 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
• Demonstrated ownership, reliability, and initiative in delivering high-quality service and meeting commitments
• Technical leadership capability to influence system design, raise engineering standards, and mentor other engineers
• Excellent communication skills and a collaborative mindset within a fully remote global team

Nice to have

• Familiarity with agentic engineering tools and concepts: LLMs, MCP APIs, AI-First IDEs (e.g. Cursor, 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 shape your own experience as part of a team in search of excellence

About Keyrock

Keyrock is a leading market maker in the digital asset space, founded in 2017 and now operating across more than 80 exchanges. The company trades on behalf of a wide array of asset issuers and operates desks in market making, options trading, high-frequency trading, OTC, and DeFi trading. With over 200 team members across 42 nationalities and hubs in London, Brussels, Singapore, and Paris, Keyrock is a pioneer in adopting Rust for algorithmic trading and supports Web3 ecosystem growth through its Accelerator Program.