CMC Markets is seeking a Senior Low Latency Java Developer to join our Quantitative Strategies team within Pricing and Risk, working on our high-performance, high-frequency trading platform. This is a hands-on role at the core of our market-making technology stack, where nanoseconds matter and engineering excellence is critical. You''ll design and build ultra-low latency pricing and risk systems that directly power our global trading operations. If you thrive in performance critical environments and want your work to have real market impact, we would love to hear from you. Please note that this is an onsite role that will require you to work within our London office (near Liverpool street) 5 days on site per week. The Role Ultra-Low Latency Engineering Develop and optimise high-performance Java (21+) systems for pricing, risk and trading. Build and enhance components within a low latency, high-throughput trading architecture. Apply advanced concurrency, memory management and performance tuning techniques. System Design and Ownership Take responsibility for designing scalable, resilient and maintainable systems. Contribute to architectural decisions across the trading and risk platform. Build tooling to improve monitoring, maintenance and performance diagnostics. Trading-Focused Collaboration Work closely with Quants, Financial Engineering, Front Office and Business Operations. Support live trading systems, troubleshooting time-critical production issues. Contribute to ..... full job details .....