Containerization & Virtualization Engineer

The Containerization & Virtualization Engineer is responsible for operating, securing, maintaining, and evolving the client container and virtualization platforms.
This includes Red Hat OpenShift infrastructure (bare-metal and virtualized deployments) and VMware vSphere clusters, Nutanix environments.
The engineer ensures a resilient, scalable, compliant, and observable hybrid platform enabling mission-critical workloads across the institution.

Duties and responsibilities:

OpenShift Container Platform Operations
OpenShift Node & Cluster Management
- Integrate new worker nodes (bare-metal or virtual machines); Prepare system configuration, network parameters, and cluster join workflows; Ensure observability, monitoring, and backup integration for new workers.
- Replace failed worker or control-plane nodes (fault tolerance).
- Perform patching, upgrades, and lifecycle operations on OpenShift clusters.
Management of OpenShift Internal Services
- Manage integration with enterprise storage systems (e.g., Trident NFS).
- Manage integration with external logging systems (Elastic, Pulse).

- Maintain platform authentication & authorization (Active Directory, RBAC).
- Configure operators and essential components: Trident (NFS storage), OADP (backup & restore), Kyverno (policies), Trivy (image security scanning), Elastic agents
- Maintain cluster registry, image policies, and governance rules.
- Create and modify OpenShift Projects (namespaces) on request.
• Monitoring & Alerting
- Monitor platform logs and events.
- Configure and manage alerting rules.
- Maintain and enhance platform observability stacks.
• TLS & Security Management
- Manage and renew TLS certificates across OpenShift components.
- Integrate AD authentication.
- Deploy EP TLS certificates and ensure secure communications.
• Infrastructure Extensions
- Add infrastructure nodes (Infra nodes) for dedicated workloads (logging, monitoring…).
- Configure Log Forwarding to Pulse and Elastic.
• Cluster Deployment
- Prepare VM, network, hardware, and firewall requirements for cluster installation.
- Adapt and maintain installation playbooks and deployment scripts.
• Collaborate with SAN and network teams during ongoing evolution studies (virtual LUNs, synchronous replication, metro clustering).

VMware & Nutanix Virtualization Platforms
- Operate, maintain, and optimize VMware vSphere clusters across LAN, iDMZ, and eDMZ.
- Manage Nutanix clusters and associated hypervisors.
- Conduct lifecycle operations: patching, upgrades, hotfixes, obsolescence handling.
- Manage vCenter, ESXi hosts, VSAN clusters, and SRM/DR architectures.
- Implement automation via PowerCLI and vRealize Orchestrator workflows.
- Ensure observability and capacity planning via Aria Operations.
- Support and implement Disaster Recovery using SRM and Metro Availability.
- Collaborate with SAN and network teams (replication, metro clusters, virtual LUNs).

Qualifications:

• 4+ years of experience in container platform engineering and infrastructure operations.
• Strong hands-on experience with Red Hat OpenShift in production environments (cluster operations, node lifecycle, Operators, storage integration, security configuration, logging & monitoring).
• Experience deploying and maintaining Operators, including storage (Trident), backup (OADP), policy engines (Kyverno), and security scanners (Trivy).
• Expertise in CI/CD, automation, and Infrastructure-as-Code (Ansible, GitOps workflows, YAML, scripting, pipelines).
• Good knowledge of observability and logging ecosystems (Elastic, OpenShift Monitoring).
• Experience with TLS certificate management, AD/OAuth integration, and security best practices for Kubernetes platforms.
• Competence in handling platform lifecycle operations: patching, upgrades, backups, certificate renewal, disaster recovery concepts.
• Working knowledge of VMware vSphere and Nutanix virtualization platforms (secondary skillset supporting the underlying infrastructure).

• Fluent in English & good level in French

Key Competencies:

• Containerization: Red Hat OpenShift (Operators, Nodes, OAuth, Storage, Logging).
• Virtualization: VMware vSphere, Nutanix AHV
• Automation: PowerCLI, Ansible, Orchestrator workflows.
• Monitoring & Observability: Aria Operations, OpenShift Monitoring.
• Security & Compliance: Kyverno, Trivy, TLS lifecycle, AD integration.
• Operational Excellence: lifecycle management, incident response, DR readiness.
• Collaboration: Work with storage, network, Dev, CISO and architecture teams.

Our Offer:

• An attractive salary package with or without a company car
• 5 additional vacation days each year
• A dedicated training program with personal development plans
• Extra-legal advantages (IT material, banks, ...)
• Regular events with the CTG team : learning lunchs, team buildings, fun events, Xmas, Marathons, ...

Are you ready to become part of a dynamic team with a clear focus on growth and excellence? Apply now and take the first step towards a fulfilling career with CTG IT Solutions.

Please note that a criminal record check will be required for this position.