Salary: £24,000 - 28,000 per year Requirements: Recent experience with Java 21 (or later) Strong understanding of TDD and BDD Experience working in Agile environments Experience implementing APIs for internal and external use Knowledge of Linux / Unix-like operating systems Ability to communicate technical concepts to non-technical audiences Understanding of Responsive Web Design Comfortable learning new tools and technologies quickly Desirable: Jackson, JAX-RS, Mockito Desirable: Messaging platforms such as Kafka or ActiveMQ Desirable: MongoDB or other document databases Desirable: Experience with high-traffic, data-heavy digital services Adaptable, proactive and delivery-focused Takes ownership and maintains high engineering standards Collaborative, open to feedback and multidisciplinary working Strategic thinker with a passion for quality digital services Responsibilities: Designing, building and improving modern digital services and platforms Working within large-scale microservice architectures Pair programming and collaborating closely across disciplines Building APIs and supporting continuous deployment through automated testing Contributing to live service support, including occasional out-of-hours cover Sharing best practice and learning from the wider development community Technologies: ActiveMQ Support Jackson Java Kafka Linux MongoDB TDD Unix Web Security More: We are looking for an experienced Senior Java Developer to help deliver one of the UK Governments most ambitious digital services. Located in Manchester or Leeds with hybrid work options, this high-impact role offers a competitive day rate of up to £700.00 per day (Inside IR35) on a 12-month contract. Join our Agile, multidisciplinary team of developers, designers, and analysts in a collaborative, delivery-focused environment that prioritizes problem-solving and impactful outcomes. last updated 6 week of 2026