Rust Engineer - Trading Systems

As a Senior Rust Engineer on Keyrock's Capital Markets team, you will take ownership of 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, 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, 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, with proficiency in Tokio
• Hands-on experience in systematic trading environments such as HFT, Market Making, or Quantitative Trading, 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 such as FIX, REST, and WebSocket, exchange connectivity, and market data feeds
• Solid grasp of low-latency networking including TCP/UDP, packet and latency path analysis, dedicated network infrastructure, and kernel bypass techniques such as DPDK
• Familiarity with agentic engineering tools and concepts including LLMs, MCP APIs, AI-First IDEs such as Cursor and Claude Code, harness engineering, and workflow automation
• Ability to make sound architectural decisions, articulate trade-offs clearly, and guide implementation across complex systems
• Ownership and reliability, with the ability to take full responsibility for your work, deliver high-quality service, meet deadlines, and follow through on commitments
• Initiative and problem-solving mindset, approaching challenges with an entrepreneurial approach and making sound, independent judgments
• Operational diligence, responding strategically to technical and operational challenges while ensuring robust and reliable trading infrastructure
• Technical leadership skills to influence system design, raise engineering standards, mentor other engineers, and guide pragmatic technical decisions
• Curiosity and growth mindset, continuously seeking to improve your skills and stay ahead of industry trends
• Excellent communication skills and a collaborative approach within a fully-remote global team

What we offer

• A competitive salary package
• Flexible working hours and the opportunity to work remotely
• Autonomy and the freedom 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 and now operating across more than 80 exchanges. The company trades on behalf of asset issuers and provides market making, options trading, high-frequency trading, OTC, and DeFi trading services. With over 200 team members across 42 nationalities and hubs in London, Brussels, Singapore, and Paris, Keyrock pioneers the use of Rust for algorithmic trading while supporting Web3 startups through its Accelerator Program and driving liquidity and innovation across DeFi, RWA, and NFT protocols.