IO Associates are supporting a growing technology consultancy in the Security and Defence sector in their search for an experienced Back-End Developer who thrives in high-assurance environments. Location: Cheltenham - hybrid working available Rate: £625 - £700 per day, Inside IR35 Duration: 12 months Due to the exciting nature of the role and the projects you will be working on, you must hold an active UK*C DV Clearance to be eligible. You will play a key role in designing, building, and maintaining the core services and infrastructure that underpin secure applications. You'll collaborate closely with front-end developers, DevOps engineers, and technical stakeholders to deliver scalable, performant, and secure systems Tech Stack Hands-on experience with Java and/or Python Comfortable working in Linux environments Exposure to containerisation or orchestration tools like OpenShift or Docker Excellent communication and collaboration skills Previous experience working in high-assurance or classified environments (preferred) If this sounds of interest, or you hold the right clearance but are looking for a slightly different role, please reach out for a confidential conversation to find out more!