DevOps Engineer (holding a valid NATO Security Clearance) - Deadline 21/05/26

Confidential

Brussels, Brussels, Belgium permanent

Posted: May 14, 2026

Job Description

Duties

• Design, build, and evolve highly scalable, secure, and resilient Kubernetes platforms utilizing SUSE Rancher as the central management plane.

• Handle the end-to-end lifecycle of RKE/RKE2 clusters (provisioning, scaling, patching and upgrading) across hybrid, multi-cloud or bare-metal environments with minimal to zero downtime.

• Develop and maintain automated CI/CD pipelines and implement GitOps workflows (using tools like Gitlab, ArgoCD or Rancher Fleet) to streamline continuous application delivery.

• Monitor platform health using tools like Prometheus and Grafana, respond to system alerts and troubleshoot complex containerized workload issues.

• Enforce security policy's, including network policies, Rancher RBAC configurations and automated container image scanning.

• Proactively monitor resource utilization (CPU, memory, persistent storage) to right-size clusters, scale nodes dynamically and optimize cloud or on-prem infrastructure.

• Create and maintain technical documentation, including runbooks and architecture diagrams.

Requirement

• Minimum of 4 years of dedicated, hands-on experience in DevOps or Platform Engineering roles.

• Over 4 years of sustained experience designing, deploying and maintaining highly available production Kubernetes clusters, heavily utilizing the SUSE Rancher ecosystem.

• A solid track record of leading complex migrations, moving legacy virtualized applications into containerized, microservice-based architectures.

• Expertly provision, secure, and lifecycle-manage large-scale, multi-cluster Kubernetes environments using SUSE Rancher UI/API and Rancher Manager.

• Write modular, reusable code to automate infrastructure provisioning across hybrid environments using Ansible.

• Architect and maintain sophisticated, zero-downtime deployment pipelines using GitOps principles with Gitlab, ArgoCD or Rancher Fleet.

• Author/manage advanced Helm charts and manage complex stateful and stateless deployments.

• Engineer comprehensive monitoring and logging stacks (Prometheus, Grafana, ELK) to establish SLIs/SLOs and configure automated remediation. Experience with Rancher Observability is a plus.

• Develop robust automation scripts in Python or Bash.

• Rapidly diagnose and resolve high-severity incidents across the entire stack, from kernel-level container issues to complex network routing failures.

• Comprehensive understanding of the underlying architectures of RKE, RKE2, K8S /K3s and knowing exactly when to apply each distribution.

• Knowledge of zero-trust models, Rancher RBAC, Pod Security Admissions, container scanning and enforcing governance.

• CNIs tools (Calico, Cilium, Canal) deep understanding of Software Defined Network and Container Networking, network policies and managing complex Ingress and Service Mesh (Istio) architectures.

• Expert knowledge of Container Storage Interfaces (CSI), disaster recovery planning and managing highly available storage solutions like SUSE Longhorn.

• Extensive practical experience operating distributed Kubernetes environments across a mix of bare-metal, on-premises hypervisors (vSphere, Nutanix), and public clouds (AWS, Azure, GCP).

• Experience acting as a technical escalation point, guiding junior team members, and establishing DevOps best practices across development teams.

Preferences

• Engineer comprehensive monitoring and logging stacks (Prometheus, Grafana, ELK) to establish SLIs/SLOs and configure automated remediation. Experience with Rancher Observability is a plus.

Location: Braine-l'Alleud, Brussels Region

Delive mode : Onsite

Type of Clearance: NATO Secret

Only EU Countries Citizens holding valid NATO SECRET Clearance can apply

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