IT & Software

Senior Java Developer (low latency)

Luxoft

London · Greater London · United Kingdom

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Overview

Senior Java-focused role shaping high‑performance market-data platforms. You will design and optimize low-latency, high-throughput systems that ingest and distribute real-time feeds across EMEA and US markets. You’ll work with cross-functional teams to ensure reliability, performance, and regulatory alignment in a Linux, kernel-bypass environment. This role offers impact by improving throughput, latency, and stability in mission-critical trading infrastructure.

Responsibilities
  • Design, develop, and maintain high-performance, low-latency Java applications
  • Profile and tune JVM performance (GC, memory, threads, latency)
  • Develop and optimize low-latency network components and kernel-bypass solutions
  • Integrate proprietary direct feeds and market-data distribution protocols across EMEA and US Options markets
  • Identify bottlenecks and improve throughput, latency, and resource utilization
  • Investigate production incidents, conduct root-cause analysis, implement fixes
  • Support deployment and production processes within Linux environments
  • Collaborate with global development, infrastructure, support, and business teams to deliver reliable market-data solutions
Key requirements
  • 8+ years of hands-on software development experience with Core Java and performance-critical systems
  • Proven JVM profiling and performance tuning experience
  • Strong Linux development and production troubleshooting experience
  • Experience designing and developing low-latency, high-throughput, mission-critical applications
  • Strong knowledge of low-latency network programming (TCP/IP, sockets, data processing, kernel-bypass)
  • Working knowledge of C++ in performance-sensitive environments
  • Experience with real-time market-data or electronic-trading platforms, including direct feeds and distribution protocols
  • Core Java
  • JVM profiling and tuning
  • Linux production experience
  • Low-latency network programming
  • TCP/IP, sockets, data processing
  • Kernel-bypass technologies

Reference: WJ-747_31189181 · Posted 01 Nov 2026, 12:11 PM

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