Linux Systems Engineer — Compute & Storage

We operate a fleet of bare-metal Linux servers across multiple colocation facilities. We need a systems engineer who understands the kernel well enough to explain why iowait spiked after that last ZFS scrub, and who can build infrastructure automation that survives a data center outage.

Responsibilities

• — Manage bare-metal Linux fleet: provisioning, kernel tuning, security hardening, and lifecycle management
• — Own ZFS storage pools: dataset layout, snapshot schedules, scrub monitoring, performance tuning, capacity planning
• — Build and maintain infrastructure automation in Python and Ansible — zero-click provisioning for new nodes
• — Operate monitoring stack: Prometheus, Grafana, Loki, alerting rules, SLO dashboards
• — Manage container runtime: Docker, containerd, image lifecycle, resource constraints, security profiles
• — Participate in on-call rotation (1 week per 6 weeks) with structured incident response and blameless postmortems

Requirements

• — 5+ years of Linux systems administration in production environments
• — Deep ZFS knowledge: pool topology, dataset properties, send/receive, snapshot management, performance analysis
• — Strong Python scripting for automation — Ansible, Salt, or similar configuration management experience
• — Experience with bare-metal provisioning: PXE, IPMI, firmware management, hardware diagnostics
• — Understanding of Linux networking: iptables/nftables, routing, VLANs, BGP basics, tcpdump/Wireshark analysis
• — Comfort with observability tooling: Prometheus metrics design, Grafana dashboards, structured logging

Nice to Have

• — Experience with Ceph, GlusterFS, or other distributed storage systems
• — Familiarity with kernel tracing: eBPF, bpftrace, perf, ftrace
• — Knowledge of SELinux policy writing and debugging
• — Experience managing hardware security: TPM, Secure Boot, measured boot, firmware attestation

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