Senior Rust Engineer - High Frequency Trading (HFT)

Brussels. Posted 3 months ago

The role

You will design, develop, and optimise low-latency, mission-critical trading systems. You will take ownership of trading stack components and collaborate with quants, traders, and engineers.

What you will do

Design, develop, and optimise low-latency, mission-critical trading systems
Own key trading stack components end-to-end
Collaborate with quants, traders, and engineers to improve trading performance and resilience
Maintain and evolve trading infrastructure
Troubleshoot complex production issues across exchange connectivity, execution, and market data handling
Drive engineering standards through technical leadership, code reviews, and mentoring
Embrace agentic engineering principles and AI-assisted workflows
Contribute to functional, component, and production-readiness testing

Required qualifications

Production-grade Rust experience building high-performance, concurrent systems
Hands-on experience in a systematic trading environment (HFT, Market Making, Quantitative Trading, or similar)
Strong AWS and Linux expertise
Proficiency in Python or other scripting languages
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

Nice to have

Proficiency with Tokio

Benefits

Competitive salary package
Autonomy in time management thanks to flexible working hours
Opportunity to work remotely

Before you apply

Passing background checks is a prerequisite to join Keyrock

About the company

Keyrock is a leading change-maker in the digital asset space and a well-established market maker. The company has over 200 team members and operates predominantly remotely with hubs in London, Brussels, Singapore and Paris.