Senior Site Reliability Engineer (MAAS)
Remote ✓Location: Fully remote, EU timezone (CET ±2h) Start date: ASAP Languages: Fluent English required Industry: Cloud Computing / GPU Infrastructure ABOUT THE OPPORTUNITY Pragmatike is hiring a Senior SRE / Infrastructure Engineer to help operate and scale a distributed infrastructure platform spanning bare-metal GPU nodes, Kubernetes, virtualization, networking, and multi-site environments. You’ll work close to the infrastructure itself, from BMCs, hardware and MAAS provisioning through Kubernetes, networking, observability, automation, and site operations. This is a hands-on role for someone who enjoys owning infrastructure end-to-end, building reliable systems, and automating everything that can be automated. Startup or hyper-growth experience is a strong plus: autonomy, ownership, and speed matter here. WHAT YOU’LL DO • Operate and maintain large-scale Linux infrastructure across Debian/Ubuntu-based bare-metal and virtualized environments. • Own MAAS-based bare-metal provisioning, including region/rack controllers, PXE, commissioning, cloud-init, node lifecycle, and API/CLI automation. • Operate and maintain production Kubernetes clusters, including upgrades, node pools, networking, storage, security hardening, and troubleshooting. • Design and maintain multi-site networking across VLANs, L2/L3 routing, bonded interfaces, VPNs, firewalls, and DNS. • Automate infrastructure provisioning and operations using Ansible, Bash/Python, OpenTofu/Terraform, and Git-based workflows. • Build and maintain automated deployment workflows including PXE, Preseed, and cloud-init. • Operate observability platforms using Prometheus, Grafana, Alertmanager, VictoriaMetrics/VictoriaLogs, or comparable tooling. • Define and improve SLIs, SLOs, alerting, and reliability practices across infrastructure and platform services. • Lead infrastructure incident response, troubleshooting, escalation, and post-incident improvements. • Maintain on-call processes and operational coverage across distributed environments. • Work close to the hardware layer, including IPMI/Redfish, BMCs, RAID, storage, hardware diagnostics, and GPU infrastructure. • Manage virtualization platforms including Proxmox, KVM/libvirt, OpenStack, or VMware, including GPU passthrough where required. • Build and maintain internal infrastructure tooling for host discovery, configuration, IPAM, hardware health, and operational automation. • Own infrastructure lifecycle activities including site onboarding, maintenance, decommissioning, drift detection, and operational runbooks. • Work closely with engineering and cross-functional teams to improve reliability, resource utilization, and operational efficiency. WHAT WE’RE LOOKING FOR • 5+ years of hands-on SRE, Infrastructure, Systems, or Platform Engineering experience. • Expert-level Linux administration, particularly Debian/Ubuntu. • Strong production experience with MAAS and bare-metal provisioning. • Expert-level, hands-on experience operating Kubernetes in production, including cluster lifecycle, networking, storage, upgrades, and troubleshooting. • Strong network engineering skills across VLANs, L2/L3 routing, bonding, VPNs, firewalls, and DNS. • Strong automation skills with Ansible, Bash and/or Python. • Experience with Terraform/OpenTofu and Git-based infrastructure workflows. • Production experience with Prometheus/Grafana or comparable observability platforms. • Experience with incident response, on-call operations, monitoring, alerting, and reliability practices. • Experience with Proxmox, KVM/libvirt, OpenStack, VMware, or comparable virtualization technologies. • Experience with bare-metal hardware, BMCs, IPMI/Redfish, storage, and hardware troubleshooting. • Strong understanding of distributed systems, container orchestration, and infrastructure reliability. • Experience with infrastructure security including RBAC, firewalls, network policies, secrets management, and security hardening. • Ability to create SOPs, runbooks, and operational processes from scratch. • Comfortable working autonomously in a fast-paced, engineering-driven environment. NICE TO HAVE • Experience operating GPU infrastructure or GPU-heavy Kubernetes/bare-metal environments. • Proxmox VE with ZFS/Ceph and GPU passthrough. • VictoriaMetrics / VictoriaLogs or similar large-scale observability platforms. • NetBox or other IPAM / infrastructure inventory platforms. • Vault, SOPS, Atlantis, or similar infrastructure security and automation tooling. • Experience with Cloudflare APIs, DNS automation, or tunnels. • Experience with UniFi or comparable site networking platforms. • Experience with service mesh or advanced CNI implementations. • Go experience, particularly for infrastructure tooling or custom exporters. • Experience with Ceph or distributed databases running on bare metal. • Experience operating infrastructure across multiple sites …
Sep 29
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