Java Engineer - Backend - Distributed Systems

Excellent opportunity opens for talented Java Developers to join a Globally leading Financial Services entity, working on critical, new projects.

Role overview

We are hiring Back End Java engineers to work on large-scale, event-driven platforms processing high volumes of Real Time transactions and API traffic. The environment is fully reactive and non-blocking, built for throughput, resilience, and low latency. This is not traditional Spring MVC/CRUD development. The stack is based on reactive streams and distributed data stores.

Key responsibilities

• Build and maintain reactive microservices using Project Reactor (Flux/Mono)
• Develop APIs and services using Spring WebFlux and non-blocking I/O
• Design and optimise data models on Apache Cassandra for scale and resilience
• Work with event-driven architectures (typically Kafka or similar messaging)
• Focus on performance, fault tolerance, and horizontal scalability
• Collaborate with platform, SRE, and data teams on production systems running at scale

Required experience

• Strong Java Back End engineering background (Java 11+)
• Hands-on production experience with Project Reactor and reactive programming
• Experience building services with Spring WebFlux (not only Spring MVC)
• Experience working with Cassandra or other distributed NoSQL databases
• Understanding of:
• Non-blocking I/O
• Backpressure
• Reactive threading models
• Experience in high-throughput, low-latency systems (payments, trading, telco, fintech, large-scale APIs)

Desirable experience

• Kafka or other streaming platforms
• Reactive database drivers (eg, reactive Cassandra, R2DBC)
• Cloud platforms (AWS, GCP, or Azure)
• Kubernetes and containerised deployments
• Observability in reactive systems (metrics, tracing, resilience patterns)

Interested? Please Apply!