Software Engineer – Gloucester Cyber, Defence & Intelligence High Level of UK Government Security required for this position. Copello have partnered with a leading defence and cyber security business who are looking for an ambitious Software Engineer to join their Gloucester team. Whether you're a specialist or a versatile developer, you'll have the chance to shape secure, mission-critical systems using the latest in Java, Python, Linux, DevSecOps, CI/CD, AWS, React, and more. You'll contribute to every phase of the development lifecycle — from concept to deployment — while helping drive the evolution of cloud-based architectures. What’s in it for you? * Salary of £50,000 - £85,000 (depending on experience) * Flexible, hybrid working options * Opportunities to learn, grow, and lead * A strong focus on work-life balance * A generous benefits package You might thrive here if you have experience with: * Agile development (SCRUM) * Java (JUnit 5.x), Python, JavaScript/TypeScript * Git, GitLab CI/CD, Docker, AWS (EC2, Lambda, EKS, etc.) * MongoDB, Oracle, Hibernate, Elasticsearch, NiFi * Mentoring junior developers