Senior Software Engineer

Java Backend Engineer - Greenfield Fintech | London (Hybrid)Multiple levels available: Associate to Senior LeadSalary: £90,000 - £140,000 + bonusLocation: London - on-site Build something that actually matters - from scratch. We're partnering with a high-growth fintech accelerator embedded within a major financial services organisation. They're not modernising legacy systems or patching old code. They're building brand-new consumer fintech products from the ground up, with serious investment, a significant product roadmap, and real engineering ownership from day one. This is a rare chance to join early, shape the architecture, and grow with the teams as they scale. The Tech Stack:

• Java / Kotlin (JVM ecosystem)* Spring / Spring Boot* Microservices architecture* AWS / GCP cloud-native platforms* Docker & Kubernetes* Messaging & streaming systems (Kafka etc.)* Observability & distributed tracing tooling What You'll Be Doing:

• Designing and building resilient, distributed systems at scale* Contributing to architectural direction across greenfield platforms* Writing clean, secure, production-ready code* Driving performance, reliability, and zero-downtime delivery* Working in close-knit, product-led squads alongside product managers and cross-functional engineering teams* At senior and lead levels - mentoring engineers and helping shape engineering culture as the organisation grows

• Strong backend engineering experience in Java or Kotlin* Solid understanding of distributed systems, event-driven architecture, and cloud environments* A genuine sense of ownership - you care about what you ship* Comfortable in fast-moving, ambiguous environments where things are still being built* Collaborative, pragmatic, and focused on continuous improvement

Why This One Stands Out:

• Greenfield builds - no legacy baggage, real product ownership* Backed by an established financial services organisation - startup pace with enterprise stability* Multiple levels available, so there's genuine room to grow* Hybrid working in London with a team that values engineering quality Interested? Reach out to Joely at Synchro - we'd love to tell you more.