Senior Low-Latency Java Engineer – London

Overview

In this role you build and optimize ultra-fast Java and Rust frameworks powering algorithmic trading at scale. You work within a specialist electronic trading technology team to deliver low-latency, event-driven solutions. You will engage in hands-on coding, performance analysis, and mentoring to raise engineering excellence. The position offers hybrid London working and a strong bonus package, with a mission to enable the bank’s high-frequency trading capabilities through efficient systems.

Pay / Benefits

• hybrid working in London (up to 2 days remote)
• competitive base salary with strong bonus potential
• opportunity for hands-on work with high-scale trading systems
• prestigious global investment bank environment
• focus on technical leadership and mentoring

Responsibilities

• Develop and optimize low-latency, event-driven trading infrastructure in Java and Rust
• Implement performance-focused enhancements across Linux-based environments
• Work on market data handling, back-testing, and simulation tools
• Analyze system performance and perform targeted optimisations
• Mentor junior engineers and contribute to technical leadership

Key requirements

• Experience in low-latency algorithmic trading systems
• Strong Java and JVM performance optimisation skills
• Experience with Linux internals, system calls, and kernel tuning
• Exposure to TCP/IP and kernel-bypass technologies
• Background in event-driven or event-sourcing microservices
• Familiarity with KDB, Rust, or C++ is advantageous

• Mentoring and technical leadership
• Hands-on, pragmatic problem solving
• Strong collaboration across teams
• Modern Java and JVM performance optimisation
• Low-latency trading systems
• Market data and back-testing/simulation tools

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