Strong Kubernetes experience (3+ years): cluster lifecycle, troubleshooting, networking, storage, and workload management
Infrastructure as Code proficiency (Terraform, 2+ years): writing, maintaining, and evolving Terraform modules and state management
Configuration management experience (Puppet, Ansible, or similar, 2+ years)
Advanced Linux / Unix administration (4+ years)
Virtualization experience (Proxmox / KVM / QEMU): provisioning, tuning, and maintaining VM clusters
Monitoring and observability experience (Prometheus, VictoriaMetrics, Grafana, or similar stack)
CI / CD skills (Jenkins, GitLab CI, or similar)
Scripting skills (Bash, Python)
Understanding of network fundamentals (DNS, HTTP / S, TCP / UDP, NAT, firewall rules)
Experience with Git-based workflows and documentation practices (Confluence, wikis)
Strong troubleshooting and root-cause analysis skills
Be able to work as part of the team
Language: English B1+ (Intermediate+)

Will definitely be a plus:

Experience with Kubespray deployments and cluster upgrades
Hands-on experience with VictoriaMetrics or Thanos for long-term metrics storage
Experience with OCI (Oracle Cloud Infrastructure)
Knowledge of Puppet / OpenVox ecosystem (Hiera, r10k, PuppetDB)
Experience with Proxmox PVE cluster management and Ceph storage
Familiarity with Jitsi or similar real-time communication platforms
Networking skills (VLAN, VXLAN, BGP, SDN concepts)
Infrastructure security implementation skills
Experience with Scrum / Kanban processes
Knowledge of a programming language (Go, Python, Ruby)

What’s in it for you?

Opportunity to deal with top-notch technologies and approaches in a world-leader product company with millions of customers
Opportunity to make a difference for online privacy, freedom of speech, and net neutrality
Decent market