Abaro is hiring a hands-on DevOps Engineer to keep a 24/7 production telemetry platform running — someone who takes a problem and brings it to the end without supervision.
About the role
You'll join a small infrastructure team responsible for the Open Telemetry Platform - multiple production Kubernetes clusters and everything under them — bare metal, Proxmox, networking, VPN tunnels to our customers, databases, and monitoring. The platform runs 24/7, and you'll be part of the paid on-call rotation. You get an area of responsibility, not a step-by-step plan. We expect you to find the root cause, fix it, verify it, write it down, and report back with facts.
How we work
Please read this before applying — it matters more to us than any single technology.
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Autonomy is the default. You figure things out from the code, docs, logs, and the system itself. Ask when you're genuinely blocked or the decision isn't yours.
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Done means done. Deployed, verified in production, committed to Git, documented in the ticket. Not "should work".
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Honesty over appearances. Broke something or don't know something? Say it right away. Mistakes are fine; hiding them isn't.
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Small, targeted changes. Fix what's broken without rebuilding the surroundings. Bigger changes: propose them with arguments, then build what was agreed.
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Production discipline. Changes are announced, planned, and have a rollback path.
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No drama. No politics, no blame, no meetings for the sake of meetings. Short written status updates.
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Disagree, then commit. Challenge decisions with data; once decided, deliver.
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Clear role. Platform direction and architecture are set by the Head of Infrastructure.
This is a hands-on role with real ownership of execution — not a management role and
not a path to a separate team or a parallel stack.
What we expect
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Kubernetes in production — cluster lifecycle (incl. k3s), networking (CNI, Ingress, MetalLB), RBAC, storage, scheduling and performance troubleshooting
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Networking fundamentals — TCP/IP, DNS, routing, NAT, load balancing; site-to-site VPNs (IPsec, GRE over IPsec); firewalls (pfSense, nftables, firewalld); tcpdump and Wireshark
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Linux administration in production (RHEL/Rocky, Debian/Ubuntu)
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Observability — correlating logs, metrics (Prometheus, Grafana) and traces to find root causes across distributed systems
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Infrastructure as Code — Ansible at minimum; Terraform or Pulumi a plus
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CI/CD and GitOps — Jenkins, ArgoCD, Helm
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Virtualization — Proxmox VE/KVM, Docker; VMware and GCP a plus
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JVM stacks (Java/Scala) — enough to troubleshoot GC, heap and resource issues
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Data layer, operationally — Cassandra, MariaDB (replication, failover, HA), Kafka, RabbitMQ, Redis, Hazelcast
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AI tools in daily work — Claude Code, Copilot or similar, with everything they produce verified
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Incidents you owned end-to-end — you can tell us what happened, what you did, what you got wrong and what you changed after
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Clear written and spoken communication in Polish and English
Mid: solid in most of the above, deep in a few; handles typical incidents alone and knows when to escalate. Senior: deep in most; can take a serious incident alone at 3 AM and deliver a post-mortem the next day.
Nice to have
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Advanced Kubernetes networking (Calico, Cilium) or a service mesh
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Security and hardening — Falco, Network Policies, FreeIPA, Wazuh, vulnerability management
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Bare-metal hardware (Dell iDRAC, RAID), MikroTik, Tailscale
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Performance tuning of JVM apps, Cassandra or Kafka
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Runbooks and post-mortems that other people actually use
What you'll do
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Run and evolve Kubernetes clusters — upgrades, scaling, networking, security
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Resolve incidents across the full stack: network, JVM, Kafka, MariaDB, Cassandra
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Keep observability useful — dashboards, and alerts worth waking up for
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Automate toil — if you do it twice, automate it
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Maintain CI/CD and GitOps (Jenkins, ArgoCD)
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Patch and mitigate vulnerabilities across the fleet
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Take part in on-call and incident response
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Document what you do — tickets, runbooks, post-mortems
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Propose improvements backed by data and deliver the agreed ones end-to-end
Probably not a match if you
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need daily guidance or a detailed task breakdown to make progress
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report work as finished before verifying it
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want to rewrite the platform in your favourite tools in the first month
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prefer process and meetings to fixing things
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are looking for a management or architect-of-everything role
What we offer
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Small team, flat structure, real ownership
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Paid on-call
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Training budget and in-house trainings
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Private healthcare and sport subscription
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Company phone
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Office with free coffee, bike parking, no dress code
Recruitment process
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Screening call (~30 min) — your experience and expectations.
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Technical interview (60–90 min) — Kubernetes, networking, observability, troubleshooting; scenario questions and a detailed walk-through of real incidents you handled yourself.
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Manager interview (~45 min) — how you work: autonomy, communication, mistakes, disagreement and pressure.
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