Position: Java Low Latency Engineer Location: London, UK (Hybrid-2/3 days from office) Long term contract position Role Overview We are looking for an experienced Java Low Latency Engineer with strong expertise in Java performance optimization, JVM tuning, and high-performance system development. The ideal candidate will have experience building event-driven, concurrent systems designed for low-latency and high-frequency environments Required Skills & Experience * Strong Core Java and JVM performance tuning expertise. * Excellent knowledge of Data Structures and Algorithms. * Experience with concurrency, multithreading, and low-latency system design. * Knowledge of GC, JNI, Java Unsafe, and JNR-FFI. * Strong understanding of CPU architecture, shared memory, and memory-mapped files. * Experience with networking protocols such as TCP and UDP. * Good understanding of Linux internals and system-level performance optimization. Nice to Have * Experience with Aeron messaging and transport technology. * Background in high-frequency trading (HFT), electronic trading, or other performance-critical systems