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 + Benefits Join a newly formed Service Modernisation & AI 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 • Strong TDD experience Java / Microservices / API design / LLMs / AI / Claude Code / Copilot