Senior Software Engineer

About the role

Join a newly formed Service Modernisation & AI team within a leading financial services firm. You will modernise high‑impact legacy Java services while building AI‑powered engineering workflows in a hybrid London environment.

Key responsibilities

• Modernise critical legacy Java services using AI‑driven analysis and refactoring techniques.
• Apply migration patterns such as the strangler‑fig to deliver clean, modern APIs.
• Ship improvements in fast cycles, measuring 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.

Required profile

• 6+ years of backend engineering experience, primarily with Java.
• Proven track record modernising production systems at scale.
• Hands‑on experience with AI development tools (e.g., Claude Code, GitHub Copilot, LLMs).
• Familiarity with MCP, AI automation, or agentic AI systems.
• Strong understanding of microservices architecture and API design.
• Solid Test‑Driven Development (TDD) practice.

Required skills

• Java
• Microservices
• API design
• Large Language Models (LLMs)
• Artificial Intelligence (AI)
• Claude Code
• GitHub Copilot
• MCP
• Test‑Driven Development (TDD)
• CI/CD pipelines

What we offer

• Competitive salary up to £120,000 per year.
• Comprehensive benefits package.
• Hybrid work model – three days onsite in London.
• Opportunity to shape AI‑first software development in financial services.