Java / Microservices / API design / LLMs / AI / Claude Code / Copilot Company: Financial Services Location: London - Hybrid 3 days per week Rate: £575 IR35: Outside CORE BANKING AND TRADING SYSTEMS EXPERIENCE ESSENTIAL 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 Java / Microservices / API design / LLMs / AI / Claude Code / Copilot...