Software Engineer - eFX

eFX Software Engineer London - Remote first (onsite twice per month) £160,000 + bonus + 10% pension + 10% benefit funding + 30 days holiday

A leading financial institution is hiring an eFX Software Engineer to build and optimise high-performance trading systems within a low-latency e-trading environment. You'll work as a senior technical contributor within the eFX engineering group, driving architectural decisions, evolving Java performance patterns, and shaping platform strategy at scale.

This role offers significant technical scope, direct impact, and the opportunity to influence system performance, design, and future direction across the e-trading stack.

The role

You will:

• Design and engineer fault-tolerant, high-performance Java systems
• Develop architectures achieving <40μs one-way latency
• Shape and evolve low-latency coding patterns (lock-free + low-GC)
• Solve complex trading and platform engineering challenges
• Contribute to platform strategy, architecture, and roadmap direction
• Collaborate across pricing, risk, connectivity, distribution, and quant teams

What we're looking for

• Deep expertise in high-performance Java
• Strong low-latency optimisation experience (<1ms, ideally <100μs)
• Proven experience tuning hardware + JVM performance
• Lock-free programming + low-GC techniques
• Ability to design, lead, and innovate technically
• Backgrounds of interest: eFX, trading, betting, exchange, market-making

Nice to have:

• Experience with IPC, Chronicle Queue, RingBuffers
• Algo, pricing, or risk engineering exposure
• Market structure + regulatory awareness (e.g. MiFID II)

Applicants must demonstrate ownership, design decision-making, and impact in previous roles. Senior IC position - no line management.

Why join

• High-impact technical role in a global e-trading environment
• Complex performance engineering + architecture challenges
• Cutting-edge Java optimisation + latency-driven systems
• Strong technical peers across engineering + quant teams
• Remote first - onsite only twice per month

Benefits

• £160k base + bonus consideration
• 10% pension
• 10% benefit funding
• 30 days holiday
• Sponsorship available