IR35: Inside IR35

Location: Hybrid – 2 days/week onsite in Sheffield initially (may reduce to a few days/month)

Overview We’re seeking an experienced Senior OpenShift Administrator/ Platform Engineer to support the lifecycle management and operational stability of OpenShift clusters across on-premise and hybrid environments. This hands-on role focuses on Day-2 operations, upgrades, patching, monitoring, security, and platform reliability , working closely with DevOps and infrastructure teams.

Key Responsibilities

OpenShift Lifecycle Management Manage full lifecycle of OpenShift clusters (OCP 4.x) Perform upgrades, patching, and vulnerability remediation Execute operational runbooks: node maintenance, certificate rotation, platform add-on management

Conduct platform health checks and preventative maintenance

Platform Reliability & Observability Operate monitoring using Prometheus, Grafana, and/or ELK Build dashboards, tune alerts, and proactively resolve issues

Troubleshoot workloads and cluster services to ensure availability

Support capacity planning and performance optimisation Incident Management & Troubleshooting Provide L2/L3 platform support for incidents

Conduct root cause analysis and lead service restoration

Contribute to post-incident reviews and runbook improvements Participate in an on-call rota where required

Security, Governance & Compliance Manage platform networking, storage, and security configurations

Implement RBAC, namespace governance, and security policies Support audit and compliance evidence for regulated environments

Automation & Infrastructure as Code Develop automation using Terraform, Ansible, or similar Standardise cluster provisioning and operational workflows

Integrate automation into CI/CD pipelines Collaboration & Documentation Work with DevOps, infrastructure, and engineering teams to support platform adoption

Produce clear operational documentation, runbooks, and troubleshooting guides Required Experience Hands-on experience administering OpenShift / OCP 4.x , including cluster operations, upgrades, patching, and troubleshooting

Experience running OpenShift in on-premise and/or hybrid environments Knowledge of container platform networking, storage, and security Observability experience with Prometheus, Grafana, or ELK Infrastructure as Code experience (Terraform, Ansible, or similar)

Comfortable working in large enterprise environments with structured operational processes

Nice to Have

Experience in regulated or highly controlled environments Broader DevOps platform engineering experience

CI/CD integration of container platforms