Software Engineer - Java

London | Hybrid | Full-time

A global payments technology platform is re-architecting how money moves in real time, building highly resilient, event-driven systems that operate at scale and power critical financial flows worldwide.

This role sits within a core engineering team responsible for designing and delivering backend services that make intelligent, time-sensitive decisions about how money moves across a global network. The systems are event-driven, highly distributed, and business-critical, requiring strong engineering discipline and pragmatic architectural thinking.

• Designing and building backend services that sit at the heart of a large-scale financial platform
• Developing Java-based services that support real-time decision-making and high-throughput processing
• Ensuring systems are observable, resilient, and performant
• Collaborating with engineers, product partners, and stakeholders to turn business requirements into robust technical solutions
• Contributing to improvements in testing, deployment, and overall engineering quality

• Java (modern versions) with a strong object-oriented foundation
• Microservices running in a cloud-native environment
• Event-driven and streaming-based systems (Kafka or similar)
• Containerised services using Docker and Kubernetes
• APIs as first-class interfaces between services
• SQL-backed persistence layers at scale
• Strong focus on testing practices including unit, integration, and contract testing
• CI/CD pipelines and modern Dev Ops practices
• High emphasis on observability, monitoring, and operational excellence

• Strong backend engineering experience with Java in production environments
• Experience building and operating distributed systems at scale
• Practical exposure to event-driven or streaming architectures
• Comfort working in cloud-native environments (AWS or similar)
• A quality-first mindset: testing, reliability, and maintainability matter to you
• Ability to work autonomously while collaborating effectively within a team
• Clear communication skills and confidence working with both technical and non-technical stakeholders

• Ownership of critical systems with genuine business impact
• A modern stack and the opportunity to influence how systems evolve
• Visibility, autonomy, and support within a mature engineering organisation
• Hybrid working with a London-based engineering team

If you’re a senior backend engineer who enjoys working on high-scale, high-impact systems and wants to be close to the technical heart of a global financial platform, this is well worth a conversation.