We're looking for a Senior Java Developer to join a trading/financial services team working on high-throughput, business-critical systems. This is a hands-on contract role for someone who's comfortable improving and evolving legacy Java platforms, while also bringing modern AI-assisted development practices into the mix.
Key Highlights
Technical Skills Required
Benefits & Perks
Job Description
Java Developer – Trading / Finance (AI Tooling Focus)
Contract | Fully Remote (UK) | £450–£500 per day (Outside IR35)
We’re looking for a Senior Java Developer to join a trading/financial services team working on high-throughput, business-critical systems. This is a hands-on contract role for someone who’s comfortable improving and evolving legacy Java platforms, while also bringing modern AI-assisted development practices into the mix.
You’ll be working fully remotely from the UK, collaborating with experienced engineers and stakeholders in a fast-moving trading environment.
What you’ll be doing
- Developing and maintaining core Java services used in trading/finance
- Working confidently with legacy systems — refactoring, modernising and stabilising them
- Practising Test-Driven Development (TDD) and improving test coverage
- Using and shaping AI developer tooling to accelerate delivery and code quality
- Applying or integrating solutions using Model Context Protocol (MCP)
- Collaborating closely with engineers, product owners and domain experts
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Tech stack & experience
- Strong commercial experience with Java
- Solid background in TDD and automated testing
- Proven experience working on legacy codebases (not just greenfield)
- Experience in trading, finance, or other low-latency / high-reliability environments
- Hands-on experience with Model Context Protocol (MCP) or similar AI context/tooling frameworks
- Comfortable working autonomously in a fully remote setup
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Nice to have
- Exposure to modernisation projects (monolith to modular, performance tuning, etc.)
- Experience introducing AI tooling into established engineering teams
- Strong communication skills and pragmatic engineering mindset
The details
- Rate: £450–£500 per day (outside IR35)
- Location: Fully remote (UK only)
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