We have partnered with a global IT consultancy on a high-priority OpenShift platform upgrade and are looking for a Security Cleared (SC) OpenShift Platform Subject Matter Expert (SME) to lead technical assurance, validation, and migration activities for a new OpenShift 4.18 environment. This is a contract position (inside IR35) and SC clearance is required (or you must be eligible and willing to go through vetting). Project Overview: You''ll support the migration of critical workloads from OpenShift 4.14 to a clean-slate 4.18 build. This includes validating core components, migrating applications and operators, and ensuring platform stability for essential business operations. Key Responsibilities Build and validate OpenShift 4.x clusters from scratch Migrate apps, infrastructure components, and OpenShift operators Validate platform configurations, installation scripts, and services Work closely with CI/CD tools, IaC, and GitOps methodologies Technical Skills Required Strong OpenShift andamp; Kubernetes experience (v4.x preferred) Comfortable with enterprise OpenShift setup and tuning Familiar with key operators: Vault, Quay, Clair, Keycloak, Istio Infrastructure as Code (Terraform/Ansible) CI/CD tools: Jenkins, ArgoCD, Tekton Scripting in Bash or Python Desirable Certifications Red Hat Certified Specialist in OpenShift Kubernetes CKA Red Hat Certified Application Developer Additional Info: Remote-first (some travel to Lincoln or Newcastle if