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Cavendish Professionals Linkedin · Posted 3d ago

Open Source Platform Engineer

Belgrade

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🚀 Cloud Infrastructure DevOps Automation Engineer |

Kubernetes Operators, FluxCD & OpenStack | CobaltCore AI-Native Control Planes |

🌍 Remote | 📄 Contract of Employment / B2B Contract |



We are seeking a Senior Cloud Automation Engineer to join a high-caliber engineering team building and scaling CobaltCore – a Kubernetes-native OpenStack Control Plane across a multi-cluster topology (Management, Control Plane, Hypervisor, Storage). Operating around a family of Kubernetes operators (Keystone, Glance, and further OpenStack services) following a shared reconciler pattern (Operator SDK, controller-runtime, Kubebuilder), this platform is orchestrated by the c5c3-operator and delivered via GitOps (FluxCD).


You will work closely with architects to build reusable operator automations, improve E2E testing, and maintain world-class technical documentation.


What You’ll Be Doing:

  • Taking E2E ownership of building, maintaining, and scaling Kubernetes-native platform components (CobaltCore/C5C3) and reusable operator automations.
  • Running Kubernetes operators and implementing GitOps delivery patterns with FluxCD across multi-cluster environments.
  • Writing requirements and reviewing translated technical designs, implementation tasks, and platform guidelines.
  • Improving the onboarding of new operators (e.g., Keystone, Horizon, Glance) onto the shared reconciler scaffolding.
  • Implementing security-by-design, least privilege, and compliance standards across secure software delivery workflows.
  • Providing AI guidance on Kubernetes operator patterns, CRD design, FluxCD-based GitOps, and OpenStack control-plane operations.


What We’re Looking For:

  • Proven commercial background (8+ YoE) in Platform Engineering, Cloud Engineering, DevOps, or Site Reliability Engineering (SRE).
  • Deep consultant mindset: ability to propose innovations, write clear technical documentation (Markdown), guide non-technical audiences, and drive operational excellence under pressure.
  • Hands-on expertise with Kubernetes-native platform technologies, CRDs, sub-reconciler patterns, webhooks, and finalizers.
  • Proven experience with GitOps concepts and Git-based delivery workflows (FluxCD).


Must-Haves:

  • Practical experience building Kubernetes operators/controllers (Operator SDK, controller-runtime, Kubebuilder).
  • Expertise in IaaS, Kubernetes, and Crossplane infrastructure automation.
  • Proficiency in programming or scripting, preferably with Go (or other major programming languages).
  • Hands-on experience with CI/CD pipelines and GitHub Actions-based development workflows.
  • Experience with Kubernetes-native testing frameworks (envtest, Chainsaw E2E, Tempest, Chaos Mesh).
  • Very good English for daily international collaboration.


Location & Working Setup:

  • Hybrid Work Model (Belgrade, Serbia).


Ready to take E2E ownership of a cutting-edge, operator-based control plane platform?

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