At Booker, part of the Tesco Group, we’re proud to serve independent retailers, caterers, and businesses across the UK. Our technology powers millions of transactions and keeps shelves stocked across thousands of outlets. We’re looking for a Software Development Engineer to join our EPOS team and help us build reliable, scalable solutions that make a real difference to our customers and colleagues. We’re committed to creating a workplace where everyone feels welcome. Whatever your background, experience, or perspective—you’ll be valued here. As a Software Development Engineer, you’ll design, build and support resilient EPOS (Electronic Point of Sale) solutions in a fast-paced, high-availability wholesale environment. You’ll work with modern technologies including Java, Spring, and REST APIs, helping us deliver stable and high-performing systems across our estate. You’ll play a key role in platform upgrades, new store rollouts and continuous improvements—making sure our systems remain secure, reliable and ready for the future. Design, build and support EPOS software solutions using Java-based technologies and modern integration patterns Develop and maintain APIs, services, and integrations across pricing, payments and back-office systems Diagnose and resolve complex technical issues, providing 3rd line support where required Support EPOS transformations, including upgrades, migrations, and new store rollouts Ensure solutions meet security, audit and data protection requirements Collaborate with internal teams, suppliers and service partners to deliver changes with minimal disruption Create and maintain clear technical documentation Contribute to continuous improvement of engineering standards, tools and ways of working Experience with Java, Spring framework and REST API development Strong understanding of JSON data structures, APIs, and system integrations Experience working in a production environment supporting high-volume systems Strong problem-solving skills with the ability to diagnose and resolve complex technical issues A collaborative approach and confidence working with cross-functional teams Knowledge of Agile development practices Strong communication and organisational skills Experience or interest in DevOps and automated testing (desirable)