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Inetum

Global IT services for digital transformation

Senior DevOps Engineer Kubernetes/OpenShift

Backend EngineeringConfirmed live in the last 24 hours
Full-timeSaint Quentin, France€55k - €65k /yr

About the Job

Requirements

  • Significant production experience developing Kubernetes operators.
  • At least 7 years of development experience, including a minimum of 5 years working with Kubernetes and at least 3 custom operator projects delivered.
  • Production experience with Go, including goroutines, error handling, tests using testing and testify, and modules.
  • Knowledge of Kubernetes operator/controller patterns using client-go or controller-runtime, reconciliation loops, and watchers.
  • Experience creating and validating Custom Resource Definitions using OpenAPI schemas and managing their status.
  • Knowledge of Kubernetes RBAC, including ServiceAccounts, Roles/ClusterRoles, RoleBindings, and admission controllers.
  • Experience integrating external REST APIs, including HTTP clients, error handling, and retry logic.
  • Experience with test-driven development, Go unit tests, envtest, and mocking.
  • Experience with Git/GitOps, ArgoCD or Flux, declarative workflows, and Git branching strategies.
  • Understanding of OpenShift (OCP 4.x) and its layers above vanilla Kubernetes.
  • Experience with Kubebuilder or Operator SDK.
  • Experience using Python for complementary integration scripts and Helm for operator packaging.
  • Concrete experience with Vault, ServiceNow APIs, Venafi PKI, and DNS/IPAM.
  • Experience in regulated environments such as banking, healthcare, or the public sector.
  • Rigor and code quality, an infrastructure-as-code mindset, Kubernetes-native practices, and a collaborative approach.

Responsibilities

  • Develop a Kubernetes operator in Go to automate creation of ArgoCD applications from Kubernetes RBAC.
  • Create a proof-of-concept demonstration environment.
  • Implement the controller and reconciliation loop.
  • Test integration between the ArgoCD API and Kubernetes RBAC.
  • Deliver a testable, documented operator.
  • Develop custom Kubernetes operators in Go to integrate ecosystem components such as Vault, ServiceNow CMDB, DNS/IPAM, and Venafi.
  • Design and implement Custom Resource Definitions and their controllers.
  • Automate secure provisioning of clusters and namespaces, including secrets, certificates, RBAC, and CMDB inventory management.
  • Apply test-driven development practices, including unit tests, integration tests with envtest, and code reviews.
  • Support the team with ACM (Advanced Cluster Management) and OpenShift integration.
  • Document operator patterns to industrialize future development.

About the Company

Inetum

Global IT services for digital transformation

Inetum provides IT services for digital transformation in 26 countries, serving enterprises, SMEs, and public sector clients. It offers cybersecurity, cloud computing, predictive maintenance, and augmented reality, delivered through consulting, managed services, and proprietary software. It differentiates itself through a broad service portfolio, strategic partnerships with Microsoft and Sage, and a focus on tailoring solutions to fit each client’s needs. Its goal is to help clients adapt to a changing digital landscape, improving business agility and creating economic, managerial, and social opportunities.

Company size
1,001-5,000
Company stage
IPO
Headquarters
Saint-Ouen, France
Founded
1995

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