Affirm
Remote Poland
Full-time
Remote
about 4 hours ago
Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidd…
Java / Microservices / API design / LLMs / AI / Claude Code / Copilot
Role: Senior Software Engineer
Company: Financial Services
Location: London - Hybrid 3 days per week
Salary: up to £120,000 + Benefits
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
Strong TDD experience
Java / Microservices / API design / LLMs / AI / Claude Code / Copilot
Neutral 2–4 sentence summary of what working at this company is like, drawn from public reviews and press coverage. Tone, collaboration style, pace, benefits highlights.
Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidd…
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