Infrastructure Test Engineer - Secure Cloud Infrastructure (SC Clearance)

Position Description

At CGI, our Space, Defence and Intelligence business unit delivers mission-critical systems that help keep the UK safe and secure.

As an Infrastructure Test Engineer, you will play a vital role in assuring the performance, resilience, and security of complex infrastructure platforms across cloud and on-premise environments. Working on high-impact programmes, you will help deliver quality-driven outcomes through rigorous testing and automation. You’ll take ownership of validation processes, contribute innovative approaches to testing, and collaborate with expert teams in an environment that supports continuous development and meaningful impact.

CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK ‘Best Employer’ by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee.

We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you’ll be part of an open, friendly community of experts. We’ll train and support you in taking your career wherever you want it to go.

Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance. This position will be based on site near Gloucester 5 days a week.

Your future duties and responsibilities

In this role, you will design and execute comprehensive testing strategies to validate infrastructure platforms, ensuring performance, reliability, and security across complex environments. You will take ownership of infrastructure testing activities, from developing automated test scripts to validating infrastructure-as-code deployments, supporting high-quality releases into production.

You will work closely with DevOps, SRE, and engineering teams to integrate testing into CI/CD pipelines, enabling continuous delivery and rapid feedback. Within a collaborative and supportive environment, you will contribute creative solutions to improve testing coverage, enhance automation, and ensure infrastructure solutions meet the highest standards.

• Design & Execute infrastructure test plans across cloud and on-prem environments
• Automate & Maintain test scripts using tools such as Python, Bash, Terraform, or Ansible
• Integrate & Support testing within CI/CD pipelines (e.g., Jenkins, GitLab CI, Azure DevOps)
• Validate & Assure infrastructure-as-code deployments and configuration changes
• Monitor & Analyse system performance using tools like Prometheus, Grafana, ELK
• Collaborate & Align with DevOps, SRE, and engineering teams
• Document & Improve test cases, results, and quality processes

Required Qualifications To Be Successful In This Role You should have strong experience in infrastructure testing or engineering, with a solid understanding of enterprise infrastructure components and modern DevOps practices. You will bring a proactive approach to quality assurance, along with the ability to work collaboratively across technical teams in complex environments.

• You should have experience in infrastructure testing, QA, or engineering roles
• Strong understanding of infrastructure (compute, storage, networking, virtualization)
• Proficiency in Linux/Unix environments and scripting (e.g., Bash, Python)
• Experience with automation tools (Terraform, Ansible, Puppet)
• Familiarity with cloud platforms (AWS, Azure, GCP) and hybrid environments
• Exposure to containers (Docker, Kubernetes)
• Knowledge of networking and security best practices

Together, as owners, let’s turn meaningful insights into action. 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.

That same commitment to fairness extends to how we use technology. To support our recruitment team, AI tools may be used to help assess applications though they never replace human judgement. All hiring decisions remain entirely in the hands of our recruitment professionals.

Come join our team—one of the largest IT and business consulting services firms in the world.