Sr Java Developer (FX)

  • Square One Resources
  • 03/05/2026
Full time Information Technology Telecommunications

Job Description

Job Title: Sr Java Developer (eTrading FX)

Location: London - 3 days per week in the office

Salary/Rate: £700-710 per day inside IR35

Start Date: As Soon as Possible

Job Type: Contract

Company Introduction

One of the world's largest global banks, with a strong presence in foreign exchange (FX) markets. Its eTrading platforms are central to delivering pricing, liquidity, and execution services to institutional clients, with a strong focus on low latency systems, algorithmic trading, and scalable global infrastructure.

Job Responsibilities/Objectives
  1. Design, develop, and optimize low latency Java trading systems for FX pricing and execution.
  2. Translate business requirements into detailed technical designs and scalable architectures.
  3. Collaborate with traders, quants, and stakeholders to enhance pricing and algorithmic execution capabilities.
  4. Implement high performance, distributed systems with robust testing and CI/CD practices.
Required Skills/Experience
  • Strong server side Java with deep understanding of multithreading and concurrency.
  • Proven experience building low latency, high performance trading systems.
  • Hands on experience with FX Spot or Equities algorithmic trading or pricing systems.
  • Knowledge of distributed systems, messaging (such as multicast or 29West), and FIX protocol.
Desirable Skills/Experience
  • Experience with lock free algorithms and advanced concurrency patterns.
  • Background in front office development within investment banking.
  • Strong understanding of market microstructure and liquidity management.
  • Exposure to enterprise integration patterns and event driven architectures.
Disclaimer

Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement.