DevOps Engineer (Kubernetes/OpenShift, GitOps)

Quick Facts

• Remote with on-site travel to Warsaw once every two weeks
• Full-time (B2B)

Description

You will join a team building and extending a data platform running on on-premises OpenShift clusters connected to a hybrid cloud environment. Own how the platform is installed, upgraded, and extended, including Helm charts, GitLab CI templates, and GitOps delivery using ArgoCD and Flux. Work hands-on with data engineers daily to get batch, streaming, and orchestration pipelines running and help them use the platform independently.

Responsibilities

• Install, configure, and upgrade the data platform on on-premises OpenShift clusters across dev, test, and production
• Integrate new operators and data processing components into the platform (e.g., Apache Flink Kubernetes Operator)
• Design and maintain Helm charts for platform components and ETL workloads
• Build, harden, and publish container images for Spark, Flink, and Airflow
• Integrate the platform with a hybrid cloud environment and EntraID SSO, including RBAC and multi-tenancy
• Build reusable GitLab CI templates for building, testing, and releasing ETL workloads
• Automate deployments with Flux and ArgoCD, including promotion from dev to production
• Design onboarding for new teams and ETL workloads (namespaces, quotas, access, secrets, data contract validation, catalog registration)
• Define reference patterns for Spark batch jobs, Flink streaming jobs, Airflow orchestration, and Trino access
• Create documentation, runbooks, and onboarding guides; run workshops for platform users
• Support data engineering teams via troubleshooting and pipeline reviews
• Monitor platform health, plan capacity, and resolve incidents with infrastructure teams

Requirements

• 3+ years of hands-on production experience with Kubernetes or OpenShift, including operators, CRDs, networking, and storage
• Experience with on-premises or bare-metal clusters beyond managed services such as EKS, AKS, or GKE
• Ability to write non-trivial Helm charts from scratch, including templating, dependencies, values design, and versioning
• Experience building and hardening Docker images
• Experience with GitLab CI, including designing reusable pipeline templates
• Practical GitOps experience with ArgoCD or Flux
• Experience deploying and operating data tools on Kubernetes, such as Apache Spark (Spark Operator), Apache Airflow, or Trino
• Hands-on experience with authentication and access control in Kubernetes: EntraID (Azure AD), OIDC or LDAP, RBAC, secrets, and TLS certificates
• Strong Linux (RHEL) skills, including Bash or Python scripting
• Ability to design processes, write documentation, and teach other engineers
• Based in Poland with the right to work there; able to travel to Warsaw office once every two weeks
• Strong English communication skills for daily work with the client and stakeholders

Benefits

• Salary range: $4000–$4900/month