Senior Platform Engineer - DV Cleared

About the role

We are hiring multiple Senior Platform Engineers to join a highly secure Defence and National Security engineering environment, working on complex, mission-critical digital platforms supporting UK government systems. This is a hands-on engineering role focused on designing, building, automating, and operating modern cloud-native platforms in highly secure environments. You will be part of teams delivering scalable, resilient and secure digital services used in real operational settings. Key Responsibilities Lead the design and implementation of platform components across modern digital services Build, test, automate and support infrastructure and application services in production environments Develop and maintain scalable, secure, and resilient cloud platforms Work across engineering, security, product and testing teams in a multi-disciplinary environment Implement CI/CD pipelines and modern continuous delivery practices Support live services, ensuring availability, performance, and reliability Debug and resolve complex issues across distributed systems and infrastructure Apply infrastructure-as-code and configuration management tooling Contribute to technical design decisions, architecture discussions, and delivery planning Mentor and support junior engineers where appropriate Technical Requirements Active DV clearance (essential) Strong Linux engineering and troubleshooting experience Experience with Kubernetes and containerised environments Infrastructure-as-Code experience (e.g. Terraform or similar) Strong scripting ability in at least one: Python, Bash, PowerShell, Go, Ruby or Groovy Experience with cloud platforms (AWS or Azure) Experience operating in live production / service environments Strong understanding of networking, system debugging and observability tooling Experience with Git and modern version control workflows Desirable Experience Experience in Defence, Government or other highly secure environments Exposure to cloud-native SaaS / PaaS platforms Experience with automation, monitoring and reliability engineering practices Certifications in AWS or Azure (mid-level or above) Experience mentoring or guiding junior engineers Strong understanding of DevOps and platform engineering best practices