Contract Opportunity – Senior EFX Developer | 1 Day Onsite | Flexible Rate
Job Title: Senior EFX Developer – Contract
Location: London (Hybrid – 1 day per week in office)
Rate: Flexible (Inside IR35) £750PD - £1100PD Via Umbrella (Subject to experience)
Contract Length: Long-term
Start Date: ASAP
Overview:
A leading investment bank is undertaking a full-scale rebuild of its electronic FX trading platform and is seeking a Senior EFX Developer to join the team on a long-term contract basis.
This is a greenfield project focused on performance, scalability, and low latency engineering. You'll be working on pricing, hedging, and booking systems that drive the bank’s FX trading capabilities.
Key Responsibilities:
* Build and optimise Java-based components for EFX trading
* Tune system performance (GC, OS-level, multithreading)
* Integrate and manage messaging protocols (FIX, Aeron, SBE)
* Work with Kafka, distributed caching (Hazelcast, Redis)
* Collaborate across front office, quant, and tech teams
* Write clean, testable, and high-performance code
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