Senior Software Engineer

Java / Microservices / API design / LLMs / AI / Claude Code / Copilot

Role: Senior Software Engineer

Company: Financial Services

Location: London - Hybrid 3 days per week

Salary: up to -120,000

Join a Service Modernisation team driving AI-first software development in financial services. This is a hands-on role modernising high-impact legacy services while building AI-powered engineering workflows.

What You''ll Do

• Modernise critical legacy Java services using AI-driven analysis and refactoring
• Apply migration patterns (e.g. strangler fig) to deliver clean, modern APIs
• Ship improvements in fast cycles with measurable gains in performance and reliability
• Build AI-powered tooling, including MCP servers and AI-assisted CI/CD pipelines
• Demonstrate how AI transforms developer productivity and code quality

What We''re Looking For

• 6+ years'' backend engineering experience (Java)
• Proven experience modernising production systems at scale
• Hands-on use of AI development tools (e.g. Claude Code, GitHub Copilot, LLMs)
• Experience with MCP, AI automation, or agentic AI systems
• Strong understanding of microservices and API design

Java / Microservices / API design / LLMs / AI / Claude Code / Copilot