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September 21, 2026

Kubernetes Application Administrator

Mid • On-site

Warsaw, Poland

Quick Facts

  • Role: Kubernetes Application Administrator (CRM applications)
  • Environments: production, testing, development
  • Coverage: shift work + 24/7 on-call

Description

Maintain and operate CRM applications across productive, test, and developer environments, including Kubernetes-based deployments in cloud environments (Google and Microsoft). Perform 2nd-line support for incidents related to these applications, execute operational tasks, and continuously monitor system health and logs. Automate maintenance processes with CI/CD pipelines and collaborate with users, testing teams, vendors, and cloud provider support.

Responsibilities

  • Application maintenance for CRM environments (production, test, development)
  • Manage Kubernetes deployments in Google and Microsoft cloud environments
  • Deploy changes, configure, update, and install new environments
  • Provide 2nd-line incident handling and execute operational orders
  • Run monitoring and diagnostics
  • Implement automation of maintenance processes using CI/CD

Requirements

  • Strong database skills: Oracle (preferred), PostgreSQL (preferred), plus SQL/PL SQL
  • Knowledge of SQL-based technologies including MSSQL, MySQL, MongoDB, MariaDB
  • Proficiency with Unix/Linux operating systems
  • Several years of experience working with Kubernetes and Docker
  • Experience with Kubernetes management tools: GitLab, Helm, ArgoCD, Harbor
  • Experience with applications hosted in Google and MS cloud environments
  • Knowledge of application servers such as JBoss and WildFly
  • Monitoring experience with Zabbix and Grafana/Prometheus; log tools such as Loki and Elasticsearch/VictoriaLogs
  • Knowledge of Jenkins and Jira
  • English proficiency for documentation and communication with Google/MS support
  • Availability for shift work and on-call duty ensuring 24/7 availability

Benefits

  • Responsible role in a leading national telecommunications group
  • Stable employment (employment contract or B2B contract)
  • Hybrid work model (4 days remote, 1 day in office)
  • Flexible working hours (8/5 + paid on-call duty)
  • Work with modern cloud-native technologies
  • Training and certifications (especially GCP and Kubernetes)
  • Benefits package: Multisport card, LuxMed medical care, life insurance, and employee offers for Group employees

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