Low-Latency Java Engineer | JVM Tuning & Reactive Systems

OneAPPS Consulting in London is seeking a high-performance Java developer focused on JVM tuning for low-latency environments. You will optimize GC, design event-driven and reactive systems, and leverage low-level Java utilities such as Unsafe, JNI, and JNR-FFI to manage off-heap memory.

Strong data structures, algorithms, and understanding of CPU architecture, memory management, and Linux internals are essential. Experience with Aeron is highly desired.

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