Free-Work UK
Platform Engineer (DV Security Clearance)
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At CGI, we build and operate mission-critical systems that help protect the UK, delivering secure, innovative solutions that make a tangible difference. As a Platform Engineer, you will play a key role in designing, automating, and evolving cloud-native platforms that enable the rapid, reliable, and secure delivery of services supporting national security programmes.
Working alongside talented engineers in a collaborative environment, you will have the opportunity to influence platform strategy, drive continuous improvement, and contribute to solutions that deliver real-world impact, while being supported in developing your skills and advancing your career.
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.
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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 role will require you to work on a secure site.
Candidate Profile
In this role, you will design, build, and operate secure Kubernetes-based platforms that underpin critical national security services. You will work closely with development teams to provide scalable, automated, and self-service platform capabilities, enabling faster and more reliable software delivery. You will take ownership of platform engineering initiatives, helping to drive innovation through automation, cloud-native technologies, and modern engineering practices.
You will contribute to the continuous improvement of platform reliability, scalability, and security, while collaborating within Agile delivery teams to solve complex technical challenges. Working in a supportive environment, you will help shape platform standards and best practices that deliver lasting value for both clients and end users.
Key Responsibilities
- Design & Operate secure Kubernetes-based platforms
- Develop & Enhance platform automation capabilities
- Enable & Support self-service tooling for development teams
- Implement & Maintain Infrastructure as Code solutions
- Optimise & Automate CI/CD and GitOps workflows
- Improve & Secure platform reliability, scalability, and performance
- Troubleshoot & Resolve complex infrastructure and application issues
- Collaborate & Deliver within Agile engineering teams
- Contribute & Innovate engineering standards and best practices
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Required Qualifications To Be Successful In This Role
To succeed in this role, you should have hands-on experience operating and supporting cloud-native platforms, with strong knowledge of Kubernetes, automation, and modern infrastructure practices. You will be comfortable working within Agile environments and have a passion for improving platform performance, security, and developer experience through automation and continuous improvement.
Essential Qualifications
- Experience administering and operating Kubernetes platforms
- Strong knowledge of GitOps tools such as ArgoCD or Flux
- Experience with Linux administration and automation
- Proven expertise in Infrastructure as Code tools such as Terraform, Puppet, Ansible, or similar
- Experience building and maintaining CI/CD pipelines and deployment automation
- Strong understanding of container technologies and cloud-native ecosystems
- Proficiency with Git-based source control workflows
- Experience with scripting or software development using Python, Go, Java, Bash, or similar
- Strong problem-solving skills and ability to troubleshoot complex technical issues
- Ability to work collaboratively within Agile delivery teams
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