Senior Supervisor, System Administration

Job description / Role

About the role

Purpose of the job
Manage and support the OpenShift platform to ensure high availability, scalability, and performance for business-critical applications. Work closely with Development, Middleware, Security, and Infrastructure teams to design, implement, and maintain containerized environments.

Duties and responsibilities

• Install, configure, and upgrade Red Hat OpenShift clusters (on-premises and/or cloud).
• Manage cluster operations, including worker nodes, control plane, networking, and storage integration.
• Implement and manage CI/CD pipelines within OpenShift.
• Monitor cluster health, performance, and capacity; troubleshoot issues and outages.
• Apply security best practices, role-based access control (RBAC), and compliance policies.
• Manage OpenShift operators, projects, namespaces, and resources.
• Ensure integration with monitoring, logging, and alerting tools.
• Perform regular system upgrades, patches, and lifecycle management.
• Support development teams with application deployment and container optimization.
• Develop expertise to train staff on OpenShift and containerization technologies.

Job specification

Education and Experience
Bachelors degree in computer science, communication engineering, or related field.

Experience and skills:

• 4-6 years of experience in IT infrastructure, with at least 2-3 years focused on container platforms (OpenShift/Kubernetes).
• Proven experience as an OpenShift Administrator or Kubernetes Administrator.
• Strong understanding of Linux/UNIX system administration.
• Hands-on experience with containerization and orchestration technologies (Docker, Kubernetes, OpenShift).
• Familiarity with CI/CD tools (Jenkins, GitLab CI, Tekton, ArgoCD).
• Knowledge of networking, storage, and security in container environments.
• Experience with monitoring/logging tools (Prometheus, Grafana, ELK, Splunk).
• Knowledge of system security, vulnerability management, and backup/recovery.
• Resourcefulness and problem-solving aptitude.
• Excellent communication and teamwork skills.

About the Company

Orange is one of the world’s leading telecommunications operators with sales of 43.5 billion euros in 2022 and 136,000 employees worldwide at 31 December 2022, including 75,000 employees in France. The Group has a total customer base of 287 million customers worldwide at 31 December 2022, including 242 million mobile customers and 24 million fixed broadband customers. The Group is present in 26 countries. Orange is also a leading provider of global IT and telecommunication services to multinational companies under the brand Orange Business.