Cloud Administrator

Job Title: ROSA Administrator/OpenShift Cloud Administrator)

Location: United Kingdom (Remote)

Employment Type: Contract (12 months)

Rate: Best in the industry (Inside IR35)

Seniority: Mid-Senior level

About the Role

We are seeking an experienced ROSA Administrator to manage and support Red Hat OpenShift Service on AWS (ROSA) environments on a 12 month contract, fully remote. You will be responsible for the administration, configuration, monitoring, security and troubleshooting of OpenShift clusters running on AWS. The role requires strong hands-on experience with Red Hat OpenShift, Kubernetes and AWS, along with a good understanding of cloud networking, IAM, security, automation and containerised application platforms.

Key Responsibilities

ROSA / OpenShift Administration

• Administer and maintain ROSA clusters across development, test and production environments
• Configure and manage projects, namespaces, nodes, machine pools and workloads
• Manage Operators, Routes, Services, Deployments, ConfigMaps and Secrets
• Perform cluster health checks, troubleshooting and performance optimisation
• Support OpenShift and ROSA version upgrades and patching
• Manage cluster capacity, scaling and resource utilisation
• Troubleshoot application, pod, node and cluster-level issues

AWS Cloud Administration

• Manage AWS resources supporting ROSA environments
• Configure and troubleshoot VPCs, subnets, route tables and security groups
• Manage IAM roles, policies and permissions associated with ROSA
• Work with EC2, EBS, Load Balancers, Route 53 and CloudWatch
• Support integration between OpenShift workloads and AWS-native services
• Ensure AWS infrastructure follows organisational security and architecture standards

Security & Access Management

• Implement and maintain OpenShift RBAC
• Manage users, groups, service accounts and permissions
• Support integration with enterprise identity providers
• Implement security controls for containers, workloads and cluster resources
• Manage secrets, certificates and secure application configurations
• Ensure compliance with corporate cloud and security policies

Monitoring & Troubleshooting

• Monitor cluster and application health and performance
• Analyse OpenShift and application logs
• Troubleshoot networking, storage, CPU, memory and application issues
• Work with development, infrastructure and security teams to resolve incidents
• Participate in incident, problem and change management processes

Automation & DevOps

• Automate administrative tasks using scripting and infrastructure-as-code
• Develop and maintain automation using Terraform, Ansible and/or Bash
• Support CI/CD pipelines and deployment automation
• Promote Infrastructure as Code and GitOps practices where appropriate
• Contribute to improvements in platform reliability and operational efficiency

Essential Skills

• Hands-on experience administering Red Hat OpenShift/Kubernetes
• Practical experience with ROSA (Red Hat OpenShift Service on AWS)
• Strong AWS administration experience
• Good understanding of AWS networking and IAM
• Experience with OpenShift CLI (oc) and Kubernetes CLI (kubectl)
• Strong Linux/RHEL administration skills
• Experience troubleshooting containerised applications
• Knowledge of OpenShift RBAC, networking, storage and security
• Experience with monitoring and logging in Kubernetes/OpenShift environments

Desirable Skills

Terraform, Ansible, Git/GitHub/GitLab, Jenkins, GitLab CI or similar CI/CD platforms, AWS CloudWatch, Prometheus and Grafana, Helm, Argo CD/OpenShift GitOps, Red Hat Advanced Cluster Management (RHACM), AWS EKS, Service Mesh

Desirable Certifications

Red Hat Certified Specialist in OpenShift Administration, RHCSA, RHCE, AWS Certified Solutions Architect, AWS Certified SysOps Administrator, Certified Kubernetes Administrator (CKA)

Experience

• 5+ years in Linux/cloud infrastructure administration
• 3+ years hands-on Kubernetes/OpenShift administration
• 2+ years AWS cloud experience
• Practical experience supporting enterprise production environments
• ITIL-based incident, change and problem management experience is desirable

Key Competencies

Strong troubleshooting and analytical skills, ability to work effectively in a production environment, good understanding of cloud security and operational best practices, strong communication and stakeholder-management skills, ability to work independently and collaboratively with DevOps, application, infrastructure and security teams, strong focus on reliability, security and operational excellence.

Typical Technology Stack

AWS | Red Hat OpenShift / ROSA | RHEL / Linux | Kubernetes / Docker / CRI-O | Terraform / Ansible | Jenkins / GitLab / GitHub Actions | Prometheus / Grafana / CloudWatch | Git | Bash / Python