Quant Developer - efx | kdb | java

Location: London, UK (Hybrid - 3 days onsite)

Contract: Initial 12-month contract

Rate: Up to £800/day (Inside IR35)

Want to make an application Make sure your CV is up to date, then read the following job specs carefully before applying.

We are seeking a Senior Quantitative Developer to join a high-performing electronic FX (eFX) technology team within a leading global investment bank. This role focuses on the design, development, and optimisation of low-latency trading systems that support automated pricing, execution, and quantitative trading strategies.

Key Responsibilities

• Design and build low-latency, event-driven trading systems for FX markets
• Collaborate with quantitative analysts to integrate and optimise trading models
• Develop and enhance capabilities across pricing, execution, and back-testing frameworks
• Conduct latency and performance analysis, driving continuous optimisation
• Build analytics and monitoring tools to assess system and model performance
• Contribute to the scalability, resilience, and reliability of the core trading platform
• Work in an agile delivery environment with frequent releases to production

Required Skills & Experience

• Strong experience in electronic trading systems, ideally within FX
• Proven track record building low-latency, high-throughput applications
• Advanced Java development skills, including performance optimisation (low GC, lock-free techniques)
• Experience with Real Time messaging frameworks/protocols (eg Aeron, Kafka, FIX, ITCH, OUCH)
• Familiarity with time-series data platforms, preferably KDB
• Solid understanding of modern software engineering practices (CI/CD, testing, agile)
• Ability to work closely with cross-functional teams and contribute to technical documentation

About Korn Ferry

Korn Ferry unleashes potential in people, teams, and organizations. We work with our clients to design optimal organization structures, roles, and responsibilities. xwzovoh We help them hire the right people and advise them on how to reward and motivate their workforce while developing professionals as they navigate and advance their careers. To learn more, please visit Korn Ferry at