Senior Java Developer - Electronic Trading

Location: London Contract Type: Inside IR35 Day Rate: Competitive (via umbrella)Contract Length: Initial 6 months (extension likely)Working Model: Hybrid Level: Senior / VP-equivalent individual contributor

A leading global financial services organisation is seeking a Senior Java Developer (Contract) to join its Electronic Fixed Income (eFI) Technology team.

This role sits in a front-office electronic trading environment, focused on building and optimising low-latency, high-performance Java trading systems used by institutional clients.

A core part of the engagement will be supporting the rollout and optimisation of TransFICC connectivity, alongside ongoing performance improvements across pricing, RFQ, execution, and market-data workflows.

• Extensive background in electronic trading systems

• Strong low-latency Java development experience

• Deep knowledge of Core Java, concurrency, and multi-threaded design

• Proven delivery of high-volume, real-time trading platforms

• Strong understanding of Fixed Income or FX trading workflows

• Experience with RFQ lifecycles within larger trading ecosystems

• Solid grasp of:

  • Object-Oriented Design

  • Domain-Driven Design (DDD)

  • Test-Driven Development (TDD)

• Linux systems experience

• Networking fundamentals: TCP, UDP, Ethernet, HTTP

• Hands-on experience with:

  • Performance profiling and monitoring

  • Fault-tolerant system design

  • Infrastructure-as-Code (AWS, Ansible or similar)

• Ability to work autonomously, take ownership, and deliver under pressure

• Strong communication skills with both technical and non-technical stakeholders

Experience expectations

• 8+ years building trading systems

• At least 5 years in electronic / eTrading environments

• Track record delivering low-latency, performance-critical applications

• Agile / Scrum delivery experience

• CI/CD pipelines and automated testing

• Experience working in regulated front-office trading environments

McGregor Boyall is an equal opportunity employer and do not discriminate on any grounds.