Senior Java Engineer
Senior Java engineer working with Java, low-latency, multi-threading, microservices, API design, LLMs, Claude Code, Copilot, MCP, and AI automation. The newly formed Service Modernisation & AI team modernizes critical legacy Java services using AI-driven refactoring and builds AI-powered development tooling.
Free Tailor for ATS: 10/10 runs left
Java, Low-Latency, Multi-threading, AI, Transformation, Algo
CORE BANKING, TRADING SYSTEMS or HIGH TRANSACTIONAL 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
10+ 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
London 3 days a week in the City
Cracow- 3 days per week -7920 Euro Gross Perm Month + Bonus + Bens
Poland Remote B2B - 8790 Euro Gross Per Month,
Madrid Remote, Milan Remote to 75K Euro Per year + Bonus + Bens
The interview process is an algorithmic coding exercise online with client panel.
Java / Microservices / API design / LLMs / AI / Claude Code / Copilot /Algo