Senior Java Software Engineer

Java Backend Engineer | London - Visa Sponsorship ProvidedAssociate to Senior Lead | £90,000 – £140,000 + bonusYour next chapter starts in London.We're looking for Java or Kotlin engineers who are ready to make the move to one of the world's great engineering cities. Full visa sponsorship is provided - we'll handle the paperwork, you focus on the work.And the work? It's genuinely exciting.We're partnering with a high-growth fintech accelerator sitting inside a major financial services organisation. No legacy. No patching. No "we'll fix it later." They're building brand-new consumer fintech products from scratch, with serious investment, real architectural ownership, and a product roadmap that actually means something.This is an early-stage opportunity. The decisions you make in the next 12 months will shape how this platform scales for years.The stack:Java / Kotlin, Spring Boot, Microservices, AWS / GCP, Docker & Kubernetes, Kafka, distributed tracingWhat you'll be doing:Building resilient distributed systems at scale, contributing to architecture on greenfield platforms, writing production-ready code you're proud of, and at senior/lead level, helping shape the engineering culture as the team grows.What we're looking for:Strong backend experience in Java or Kotlin, solid understanding of distributed systems and event-driven architecture, and someone who genuinely cares about what they ship.Why?London's fintech scene is one of the best in the world - and this role puts you right at the centre of it. Startup energy, enterprise backing, hybrid working, and a team that takes engineering seriously. Multiple levels available, so there's real room to grow from day one.Visa sponsorship provided. Relocation support available.Interested? Reach out to Joely at Synchro - joely@wearesynchro.co.uk