Version 1 is hiring a Senior Java Developer

We are seeking an experienced Senior Java Engineer to join our UK Digital Data & Cloud Practice. Our Digital Practice is expanding rapidly and you will have the opportunity to achieve medium and long-term career goals. You will be working for one of our high-profile trading clients within the financial services domain, contributing hands-on to a Java-based development team supporting a high-volume message processing environment. The team is heavily Java-focused, operating within a client ecosystem that relies extensively on Kafka, Kubernetes/OpenShift, caching solutions, REST APIs, and high-throughput distributed systems. You will bring deep, practical experience in scaling systems that process millions of messages per day and strong problem-solving capability across complex backend challenges. Technical Delivery Design, develop, and maintain high-quality backend components in Java, with a focus on performance and resilience. Contribute hands-on to complex features across messaging, caching, and distributed processing layers. Troubleshoot and resolve issues related to sequencing, recovery, message failures, and large-volume processing. Support releases, deployments, and production stability activities. Adhere to CI/CD pipelines, code quality standards, and operational readiness requirements. Apply performance, security, and resilience best practices, particularly around large-scale message handling. Collaboration Work closely with the Technical Lead and peers to deliver against team objectives. Contribute to technical discussions, design reviews, and knowledge sharing within the team. Raise risks, blockers, and progress updates clearly within the team.