Java Low Latency Engineer

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

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