Principal Engineer

Principal Engineer

I’m working with a fast-growing fintech business building financial technology that helps thousands of businesses across Europe.

They’re looking for a Principal Backend Engineer to take a leading role in shaping the architecture behind high-scale payments, merchant onboarding and transaction-processing platforms.

This is a genuinely hands-on leadership role, combining architecture, technical strategy and engineering across multiple teams and domains.

What they’re looking for:

• 8+ years building distributed, production-grade backend systems
• Senior Staff / Principal-level experience
• Deep expertise in Java 17+, Spring Boot and/or Kotlin
• Strong microservices & event-driven architecture experience
• Kafka, REST/gRPC and DDD
• Experience with AWS, Docker & Kubernetes
• Strong understanding of scalability, resilience, performance and observability
• Experience in fintech, payments or high-volume transaction environments is highly desirable
• Excellent technical leadership and stakeholder management

More information:

• Central London – 3 days a week ideal but might be able to flex to 1-2 days a week
• £150k-£180k + bonus

A great opportunity for a Principal Engineer who wants to have genuine architectural influence and help shape high-scale fintech platforms used across Europe.