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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Site Reliability Engineer (On-prem Kubernetes Operations) for NATO with security clearance - **Company:** Wlg - **Location:** Brussel, Belgium (Remote available) - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Data Analysis, Computer Networks, DevOps, Key Management, Network Architecture, Nginx, Role-Based Access Control, Reliability Engineering, Prometheus, Software Engineering, Zabbix, Data Logging, SUSE Linux, Grafana, Kubernetes, CIS Benchmarks, Vulnerability Analysis - **Published:** August 12, 2026 - **Apply:** https://www.careerjet.be/jobad/be453276d3af25034370df648a268822dc ## About the Role * A university degree plus three years of relevant experience, or the equivalent. * Three or more years of hands-on Kubernetes operations. * Experience with SUSE RKE2. * Real experience of monitoring, logging, registries, ingress, CNI and backup tooling. * Nice to have: an international environment with both military and civilian colleagues, and an understanding of NATO's structure. Practical detail * Brussels, Belgium - on site; most daily activity has to be done in the office. No travel. * 28 September to 31 December 2026, 570 hours in total. * You must hold a valid clearance and be a citizen of a NATO member country with the right to work in Belgium. If you would rather operate a platform properly than build a new one every quarter, this is the kind of role where that is the whole point. ## Description WLG and our selected partners use cookies and similar technologies (together "cookies") that are necessary to present this website, and to ensure you get the best experience of it. If you consent to it, we will also use cookies for analytics and marketing purposes. See our to read more about the cookies we set. 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Vendors Youtube common--cookies--preferences#handleAccept">Accept these cookies common--cookies--preferences#handleDecline">Decline all non-necessary cookies common--header--menu#toggle" data-common--header--menu-target="button" > Career menu Employee Candidate Homepage common--dropdown#toggle"> Share page common--share#handleClick" data-provider="Facebook"> Facebook common--share#handleClick" data-provider="Twitter"> X common--share#handleClick" data-provider="LinkedIn"> LinkedIn DevOps · Brussels Site Reliability Engineer (On-prem Kubernetes Operations) for NATO with security clearance Run the on-premise Kubernetes clusters behind a NATO organisation's services in Brussels - operations, upgrades, security and the reporting that proves it. careersite--jobs--form-overlay#showFormOverlay" data-careersite--jobs--form-overlay-target="coverButton"> Apply for this job blocks--cover--scroll#handleScrollDown" title="Scroll to content"> A NATO organisation in Brussels runs its own Kubernetes platform on premise, and it is looking for the person who keeps it healthy. This is a pure platform-operations role: the clusters, the tooling inside them, and the monthly evidence that the whole thing is compliant and under control. Application development and the underlying virtual, storage and network infrastructure sit with other teams. What you would be doing * Daily monitoring of cluster health and alerts, and node lifecycle operations - join, drain, cordon, replacement. * Managing the Kubernetes components: CNI, CSI, ingress, metrics server and CoreDNS. * Certificate rotation and secrets management, RBAC administration with periodic audits, and network policy management. * Upgrades and patching, including quarterly upgrade readiness. * Vulnerability scanning and remediation inside the cluster. * Backup operations with Velero or K10 (disaster recovery testing stays with the customer). * Maintaining documentation and runbooks, and helping application teams troubleshoot their deployments. * Producing the monthly artefacts: cluster health, security compliance (CIS benchmarks, RBAC audit, network policy, vulnerabilities), capacity and performance, patching and upgrades, incidents and root cause analysis, configuration drift against the approved baseline, the change log and the risk register. The stack inside the cluster * Prometheus and Grafana, a logging stack, NGINX or another ingress, Cilium CNI. * Backup tooling, an on-premise registry such as Harbor or SUSE, ArgoCD for GitOps, metrics server, cert-manager and Zabbix integration hooks. ## Related Videos - [How I saved 200K/yr in direct costs writing 0 code lines in K8s](https://www.wearedevelopers.com/videos/1055-how-i-saved-200k-yr-in-direct-costs-writing-0-code-lines-in-k8s) - [Post-Quantum Cryptography: Preparing for Q-Day](https://www.wearedevelopers.com/videos/100179-post-quantum-cryptography-preparing-for-q-day) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Hosting a modern justice system](https://www.wearedevelopers.com/videos/332-hosting-a-modern-justice-system) - [Kubernetes Security Best Practices](https://www.wearedevelopers.com/videos/1411-kubernetes-security-best-practices) - [Streaming AI Responses in Real-Time with SSE in Next.js & NestJS](https://www.wearedevelopers.com/videos/1630-streaming-ai-responses-in-real-time-with-sse-in-next-js-nestjs) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)