eFX Software Engineer

eFX Software Engineer - Permanent | London (Hybrid)

We're hiring an experienced eFX Software Engineer to join a leading financial institution's digital technology division. This is a permanent position based in London with a flexible hybrid working model.

You'll be part of a high-performing team focused on delivering secure, high-performance, and scalable solutions to support institutional trading platforms.

Key Responsibilities:

• Develop and maintain low-latency eFX trading systems using high-performance Java (eg, lock-free, low-GC techniques).
• Design and implement fault-tolerant system architectures with <40 microseconds one-way latency.
• Collaborate with cross-functional teams to define and evolve architecture and engineering practices.
• Influence technical strategy, ensuring alignment with product and trading goals.
• Contribute to the evolution of FX pricing and risk management capabilities.

Required Skills & Experience:

• Strong expertise in core Java, including low-latency, high-throughput systems.
• Deep understanding of modern CPU architecture, cache optimization, and Linux performance tuning.
• In-depth experience with networking protocols such as TCP, UDP, Multicast, FIX.
• Familiarity with quantitative finance, algorithmic trading, and implementing controls in automated trading systems.
• Proven experience with DevOps, Agile methodologies, TDD, and use of CI/CD tools.
• Background in API design and automated testing frameworks.

This is an excellent opportunity to work on complex, high-impact systems within a supportive and forward-thinking technology team.

*Rates depend on experience and client requirements