Senior Java Software Engineer

Senior Java Developer

Permanent | Full‐Time

Our client is expanding their engineering team and we're supporting them in the search for a Senior Java Developer with strong experience in distributed systems, large‐scale data processing, and high‐performance microservices. This is an opportunity to join a highly technical environment working on an event‐driven platform that handles high‐volume, real‐time data.

The Role

You'll play a key part in designing and delivering Java‐based services that power a complex, data‐intensive system. The ideal candidate enjoys solving distributed‐systems challenges, improving performance, and contributing to architectural decisions.

Key Responsibilities

Develop and maintain Java‐based microservices

Build scalable event‐stream processing pipelines using Apache technologies (Kafka, Camel, Flink, etc.)

Optimise services for throughput, reliability, and low latency

Design and maintain REST APIs for internal and external use

Collaborate with product and UI teams on data models and integration patterns

Design relational data structures for high‐ingest workloads

Write efficient SQL, schema migrations, and performance improvements

Contribute to architecture, testing standards, observability, and code quality

Mentor mid‐level and junior engineers

(Optional) Support tooling, automation, or prototypes using Python

What We're Looking For

Strong experience building production back‐end systems

Deep expertise in Java

Solid understanding of distributed systems and microservice design

Experience designing and implementing REST APIs

Familiarity with Apache‐based data or messaging frameworks

Experience with containerised deployments

Strong debugging skills across multi‐service environments

Clear communication and the ability to work cross‐functionally