Software Engineers (DV Security Clearance)

CGI's Space, Defence and Intelligence business unit delivers bespoke, technically complex, mission-critical systems that help our clients keep the UK safe and secure. We work as a true systems integrator, combining proven and emerging technologies with agile delivery and deep domain expertise.

We are seeking Software Engineers working closely with our clients to design, build, and operate high-value systems in highly secure environments. This is an opportunity to work on cutting-edge technology where your decisions directly impact real-world operations.

Due to the secure nature of this role, candidates must be sole UK nationals and either already hold, or be eligible to obtain, a high level UK Security Clearance (DV/HLC). Candidates without current clearance are encouraged to apply and will be considered for this and other suitable opportunities within CGI.

This role is primarily site-based (5 days per week) on a secure client location, with limited flexibility subject to business and security constraints.

~Design, develop, test, and deliver secure, scalable software solutions

~Work end-to-end across the software lifecycle, from requirements to live systems

~Collaborate with clients, architects, and engineers to solve complex problems

~Build and integrate software components within secure deployment environments

~Support and improve live systems to ensure resilience, performance, and security

~Contribute to Agile teams and continuous improvement initiatives

~Apply DevOps and automation practices to improve delivery and quality

We welcome engineers with depth in one area or broader full-stack experience. You do not need experience in every technology listed.

Core skills

~Strong foundation in software engineering principles

~Experience with one or more modern languages: Java, Python, Rust (or similar)

~Experience working in Agile delivery environments

~Ability to learn new technologies quickly

~Strong communication and collaboration skills

Desirable experience

~CI/CD tooling (e.g. Jenkins, GitLab CI/CD)

~Infrastructure as Code (e.g. Terraform)

~Cloud platforms (AWS or equivalent)

~Linux environments, scripting, and automation (Bash, Ansible)

~Testing and quality tools (Cucumber, SonarQube)

~Monitoring and logging (ELK, Grafana)

~Front-end frameworks (Vue.js or similar)

~Dataflow and integration tools (e.g. Apache NiFi)

#LI-JS2

• RESTful (Rest-APIs)
• Spring
• Data Modeling

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CGI was recognised in the Sunday Times Best Places to Work List 2025 and named one of the World's Best Employers by Forbes. We offer a competitive salary, excellent pension, private healthcare, and a share scheme (3.5% + 3.5% matching), making you a CGI partner, not just an employee.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you'll reach your full potential because… You are invited to be an owner from day 1 as we work together to bring our Dream to life. That's why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company's strategy and direction. Your work creates value. You'll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise. You'll shape your career by joining a company built to grow and last. You'll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons. Come join our team-one of the largest IT and business consulting services firms in the world.