Platform Engineer

At CGI, we deliver secure, scalable cloud platforms that support critical programmes across Space, Defence and Intelligence. As a Platform Engineer, you’ll help design, automate and optimise modern infrastructure environments using Kubernetes and Linux. You’ll take ownership of technical challenges, develop innovative automation solutions and collaborate with experienced teams to deliver resilient, high-performing platforms. Working on a secure programme in Belfast, you’ll have the opportunity to make a tangible impact while developing your expertise in cloud infrastructure and platform engineering., In this role, you will design, manage and optimise secure cloud and Kubernetes infrastructure, ensuring high availability, scalability and performance. You’ll take ownership of platform reliability, drive automation and work collaboratively with DevOps and development teams to deliver secure, efficient infrastructure solutions.

• Design & Manage: Deploy, maintain and monitor Kubernetes clusters and Linux infrastructure.

• Automate & Optimise: Use Ansible, scripting and Infrastructure as Code (IaC) to streamline provisioning and operations.

• Orchestrate & Scale: Manage Kubernetes workloads, container deployments and microservices.

• Secure & Protect: Maintain platform security, resilience, backup and disaster recovery capabilities.

• Integrate & Deliver: Support CI/CD pipelines and collaborate with DevOps teams to improve deployment efficiency.

You should have hands-on experience managing Linux-based infrastructure and container platforms, with strong automation skills and an understanding of secure, highly available environments.

• Strong experience with Red Hat and Kubernetes.

• Solid Linux administration and troubleshooting skills.

• Experience with Ansible, scripting and Infrastructure as Code.

• Understanding of containerisation, networking and infrastructure security.

• Familiarity with CI/CD pipelines and DevOps practices.

• Knowledge of monitoring, high availability and disaster recovery.

• UK Security Clearance or eligibility to obtain it.

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 role requires five days per week onsite in Belfast.

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.

Discover CGI

London, England, United Kingdom > 1000 employees IT services We are a global business with 91,500 professionals across hundreds of locations worldwide, providing end-to-end IT and business process services that drive our clients’ businesses. In the UK alone, we have around 6,000 member-partners working across 19 towns and cities, doing everything from writing complex code to designing sophisticated software solutions. The work we do powers some of the most ambitious projects that touch the lives of many. Our approach sets us apart, characterised by our proximity model, international presence, expertise, and operational excellence. We organise our operations within metro markets where our clients have concentrated footprints, empowering our local teams to build trusted, in-person relationships. As you build your career here, you’ll develop your skills, share your insights, and work side-by-side with colleagues and clients on innovative solutions that address the most complex issues. Our commitment to ownership, flexibility, and being approachable makes us easy to do business with. Join us, and together, as owners, let’s turn meaningful insights into action to meet the needs and balance the interests of our clients, shareholders, communities, and each other. Benefits: - Insurance coverage - Medical benefits - Pension plan - Member Assistant Programme - Check4Cancer - Flexible time off - Share Purchase Plan - Member discounts - Dental benefits - Vision benefits - Profit Participation Plan - Health and Wellbeing Programme