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Tech Stack
Tools & technologiesAnsibleDNSFirewallsKubernetesLinuxPuppetTerraformVault
About the role
Key responsibilities & impact- Manage configuration state across physical and virtual assets using GitOps and Infrastructure as Code tools
- Maintain and support production Kubernetes clusters in restricted environments, including upgrades, storage integration, and registry management
- Administer secure platform core services including Mattermost, Nextcloud, Keycloak, and OpenBao
- Run weekly change-management and vulnerability-management meetings with infrastructure stakeholders
- Maintain technical security controls for Finnish Katakri, German VS-NfD, NIS2, ISO 27001, and related frameworks
- Maintain secure infrastructure networking, including VLAN isolation, mTLS, PKI, and identity integrations
- Execute backup and disaster-recovery procedures
- Perform routine hardware maintenance across air-gapped or high-security sites
Requirements
What you’ll need- 5+ years of hands-on experience in Systems Administration, IT Systems Engineering, or Infrastructure Operations, focused on Linux environments
- Practical experience running and maintaining production Kubernetes clusters
- Expert-level Linux administration with Debian/Ubuntu or RHEL/Rocky, including system hardening and vulnerability patching
- Practical knowledge of Katakri, VS-NfD, or equivalent European security/compliance frameworks, including ISO 27001 and NIS2
- Solid understanding of enterprise networking fundamentals: VLAN segmentation, firewalls, DNS/DHCP, VPN protocols, and PKI
- Eligibility to obtain and maintain a high-level national security clearance in Finland
- Experience with Ceph or ZFS storage systems
- Experience with at least one Infrastructure as Code tool: Ansible, Terraform, or Puppet
- Experience with Keycloak, Vault, or internal PKI management
- Familiarity with Kubernetes operations in secure or air-gapped environments
Benefits
Comp & perks- Continuous professional development
- Training opportunities
- Health and wellbeing support
- Diversity, equity, and inclusion commitment
- Flexible recruitment-process adjustments or support where needed