Lead Java Developer

About the Role

We are seeking a highly skilled Lead Java Developer to join a large-scale public sector programme, delivering solutions across a portfolio of biometric and digital identity products. You will play a key role in building, enhancing, and supporting live systems, diagnosing incidents, and engineering high-quality, scalable Java solutions within a collaborative Agile environment.

Must have active SC & NPPV3 clearance

Key Responsibilities

• Design, develop, and implement Java-based solutions for large-scale biometric and digital platforms
• Support and maintain live production systems, including incident diagnosis and resolution
• Build and integrate microservices-based architectures using modern Spring technologies
• Collaborate closely with engineers, architects, and stakeholders to deliver high-quality code
• Contribute to CI/CD pipelines and promote engineering best practices
• Mentor and support team members where required

Essential Skills & Experience

• 8-10+ years of hands-on Java development experience on large-scale Spring-based projects
• Java 17+, Spring Boot, Spring Data JPA, Spring Batch, Spring Integration, Microservices
• SQL databases (PostgreSQL/Aurora), Hibernate (JPA)
• REST & SOAP web services
• Messaging systems such as ActiveMQ
• AWS cloud services (EC2, SQS, RDS, DynamoDB, S3, Route53, KMS, CloudWatch)
• CI/CD tooling: Maven, Git, Jenkins, SonarQube
• Containerisation using Docker
• Test-driven development using JUnit, Mockito, TestContainers (or similar)
• Agile delivery (Scrum/Kanban)
• Experience supporting live systems and resolving production issues
• Public sector project experience

Desirable Skills

• Angular and/or Node.js
• Jaspersoft reporting
• Spring Cloud, Activiti BPMN
• DBA-level exposure to performance tuning (Postgres/Aurora)
• AWS DevOps and infrastructure automation
• Monitoring with Grafana