Software Engineer
At CGI, we don't just build software, we engineer secure, mission-critical systems that help protect the UK and support some of its most critical national infrastructure.
At CGI, we don't just build software, we engineer secure, mission-critical systems that help protect the UK and support some of its most critical national infrastructure. As a Software Developer, you'll join the Space, Defence and Intelligence business unit, working alongside clients to design, build and evolve complex software solutions that solve real-world challenges. You'll work with modern technologies, agile delivery practices and highly skilled teams to deliver systems that are secure, scalable and built to last. This is an opportunity to work on technically challenging programmes where innovation is encouraged, learning is continuous, and your work has genuine impact. CGI has been recognised in the Sunday Times Best Places to Work 2025 and named one of the World's Best Employers by Forbes. As a CGI Partner, you'll benefit from industry-leading training, a collaborative culture and our unique share ownership scheme because here, you're more than an employee. The role requires you to hold of obtain UK Security Clearance, the role will be based on a secure site.
Your future duties and responsibilities
As a Software Developer, you'll contribute across the full software development lifecycle, working within multidisciplinary teams to deliver secure solutions for our defence and intelligence clients. You will: Design, develop and maintain secure, scalable software applications. Work across the full development lifecycle, from concept through to deployment and support. Collaborate closely with architects, engineers and client stakeholders to solve complex technical challenges. Build modern cloud-native applications using contemporary development practices. Improve existing systems through performance optimisation, automation and continuous improvement. Support live environments, troubleshooting issues and delivering enhancements. Share knowledge with colleagues while continually developing your own technical expertise.
Required qualifications to be successful in this role
Posted July 29, 2026