About this role

Apply for Senior Java Developer (low latency) in London

Project description

Join a global technology team responsible for developing and supporting high-performance market-data and trading platforms across EMEA and the US. The project focuses on low-latency distribution of real-time market data from more than 70 proprietary direct feeds, including US Options markets.

The platform operates in a performance-critical Linux environment and requires efficient network programming, kernel-bypass technologies, and continuous JVM and application tuning. The team supports complex market-data workflows involving Denali, MPAC, Beacon, Refinitiv ETA, etc., while ensuring alignment with relevant market structures and regulatory requirements, including MiFID II.

Responsibilities

Design, develop, and maintain high-performance, low-latency applications using Core Java.
Perform JVM profiling and tuning, including garbage collection, memory, thread, CPU, and latency analysis.
Develop and optimize low-latency network components and kernel-bypass solutions.
Integrate and support proprietary direct feeds and market-data distribution protocols across EMEA and US Options markets.
Identify performance bottlenecks and improve application throughput, latency, and resource utilization.
Investigate production incidents, conduct root-cause analysis, and implement permanent fixes.
Support deployment and production processes within Linux environments.
Collaborate with global development, infrastructure, support, and business teams to deliver reliable market-data solutions.

Skills

Must have

8+ years of hands-on software development experience, with strong expertise in Core Java and performance-critical systems.
Proven experience with JVM profiling and performance tuning, including garbage collection, memory, thread, CPU, and latency optimization.
Strong Linux development and troubleshooting experience in production environments.
Experience designing and developing low-latency, high-throughput, mission-critical applications.
Strong knowledge of low-latency network programming, including TCP/IP, sockets, efficient data processing, and kernel-bypass technologies.
Working knowledge of C++, particularly in performance-sensitive environments.
Experience with real-time market-data or electronic-trading platforms, including direct feeds, distribution protocols, and exchange connectivity.
Strong performance analysis, troubleshooting, and production-support capabilities, with the ability to identify bottlenecks and perform root-cause analysis.

Nice to have

Knowledge of MiFID II market structure and experience with EMEA or US Options market-data feeds.
Familiarity with Refinitiv ETA or similar real-time market-data distribution protocols.
Advanced knowledge of hardware-aware performance optimization, including CPU caches, NUMA, memory hierarchy, and NIC tuning.
Experience with packet capture, network diagnostics, benchmarking, and observability tools.
Advanced C++ performance optimization experience in low-latency or high-throughput environments.

Other

Languages

English: B2 Upper Intermediate

Seniority

Senior

London, United Kingdom of Great Britain and Northern Ireland

Req. VR-125643

Java

BCM Industry

20/10/2026