Senior Java Engineer (Contract) – Fintech Platform (Hybrid)

Explore Group in London is seeking a Senior Java Engineer on a contract basis to help build a greenfield fintech platform. You will design and implement low-latency, high-throughput microservices with Java 21+ and Spring Boot, owning features from architecture to production.

You will partner with product and risk teams to deliver resilient event-driven systems (Kafka/RabbitMQ) and champion TDD, automated CI/CD, and rigorous code reviews.