Expert DevOps AWS / OpenShift (ROSA) – Terraform, GitLab-CI, ArgoCD – Sén (IT) / Freelance

Job summary

The role strengthens a production integration team by building and operating an AWS platform, primarily Red Hat OpenShift Service on AWS (ROSA), alongside on-premise OpenShift clusters. Work includes provisioning AWS infrastructure with Terraform, managing GitLab CI/CD and ArgoCD GitOps deployments, securing software delivery with scanning and secrets tools, and troubleshooting application workloads. The team uses Scrum and supports cloud and disconnected on-premise environments.

Qualifications

• At least 10 years of experience.
• Strong production AWS platform experience, including networking, IAM, compute, storage, load balancing, DNS, encryption, monitoring, and container registries.
• Production experience with ROSA, OpenShift on AWS, or EKS.
• Strong OpenShift and Kubernetes knowledge, including Helm, routes and ingress, CSI storage, and troubleshooting.
• Experience with Terraform modules and remote state, and with Ansible.
• Experience with GitLab CI/CD, runner setup, and ArgoCD GitOps.
• Experience securing software delivery with Kaniko, Trivy, Grype, Syft, Checkov, Artifactory, and HashiCorp Vault.
• Agile project experience and ability to work collaboratively.
• Fluent French.
• OpenShift on-premise in disconnected environments, VMware vSphere, NSX, F5, and object storage are advantages.

Responsibilities

• Design and implement AWS foundations with Terraform, including accounts, VPCs, hybrid connectivity, IAM, security, and observability.
• Deploy, configure, and upgrade ROSA clusters and supporting services.
• Create and maintain GitLab CI/CD jobs, pipelines, and runners.
• Integrate Vault, image registries, and security scanning tools into build and runtime workflows.
• Deploy applications using ArgoCD GitOps on cloud and on-premise clusters.
• Maintain application workloads and troubleshoot and resolve incidents.
• Configure and operate disconnected on-premise OpenShift clusters.
• Lead technical workshops and write usage standards, installation and operations documentation, and procedures.
• Provide monthly activity reports.

Skills

Certifications

Languages

Relocation