Java / Microservices / API design / LLMs / AI / Claude Code / CopilotRole: Senior Software EngineerCompany: Financial ServicesLocation: London - Hybrid 3 days per weekSalary: up to £120,000Join 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 DoModernise critical legacy Java services using AI-driven analysis and refactoringApply migration patterns (e.g. strangler fig) to deliver clean, modern APIsShip improvements in fast cycles with measurable gains in performance and reliabilityBuild AI-powered tooling, including MCP servers and AI-assisted CI/CD pipelinesDemonstrate how AI transforms developer productivity and code qualityWhat We''re Looking For6+ years'' backend engineering experience (Java)Proven experience modernising production systems at scaleHands-on use of AI development tools (e.g. Claude Code, GitHub Copilot, LLMs)Experience with MCP, AI automation, or agentic AI systemsStrong understanding of microservices and API designJava / Microservices / API design / LLMs / AI / Claude Code / Copilot