Senior Software Engineer

Principal Software Engineer (Individual Contributor)6-Month Contract | Fully Remote (UK) | Up to €300/day | ASAP StartThe Company UK-based fintech platform backed by major retail brands, operating in the Buy Now Pay Later / pay-later space (Klarna-style alternative). The platform is scaling and investing in strengthening its microservices architecture and cloud infrastructure.The Role We are seeking a Senior-level Engineer to work on complex technical delivery across Node.js microservices and AWS cloud infrastructure.This is a hands-on technical role with no line management responsibilities. You will operate at Principal level in terms of ownership, architectural input, and production impact, while remaining embedded in the code.Key Responsibilities Build scalable API-driven microservices (Node.js / TypeScript)Lead complex technical design decisions and architectural trade-offsContribute to and uphold engineering standards and best practicesOwn code quality, testing strategy, and CI...