Java, Low-Latency, Multi-threading, AI, Transformation, AlgoCORE BANKING, TRADING SYSTEMS or HIGH TRANSACTIONAL SYSTEMS EXPERIENCE ESSENTIALJoin a newly formed Service Modernisation and 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 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 For10+ 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 designLondon 3 days a week in the CityCracow- 3 days per week -7920 Euro Gross Perm Month + Bonus + BensPoland Remote B2B - 8790 Euro Gross Per Month,Madrid Remote, Milan Remote to 75K Euro Per year + Bonus + BensThe interview process is an algorithmic coding exercise online with client panel.Java / Microservices / API design / LLMs / AI / Claude Code / Copilot ..... full job details .....