Senior Site Reliability Engineer (MAAS)

Pragmatike; United States; Remote; USD 140,000 - 190,000; Full time

Job summary

Pragmatike is hiring a Senior SRE / Infrastructure Engineer to operate and scale a distributed platform spanning bare-metal GPU nodes, Kubernetes, virtualization, networking, and multi-site environments. You’ll work hands-on from hardware provisioning through Kubernetes, observability, and automation.

Startup or hyper-growth experience is a strong plus: autonomy and speed matter. You’ll own provisioning, cluster management, networking, automation, and incident response.

Qualifications

• 5+ years hands-on SRE/infrastructure experience.
• Expert-level Linux administration, Debian/Ubuntu.

Responsibilities

• Operate and maintain large-scale Linux infrastructure across bare-metal and virtualized environments.
• Own MAAS-based bare-metal provisioning, including region/rack controllers and API/CLI automation.
• Operate production Kubernetes clusters, including upgrades, networking, storage, security hardening, and troubleshooting.
• Design multi-site networking across VLANs, L2/L3 routing, VPNs, firewalls, and DNS.
• Automate provisioning and operations using Ansible, Bash/Python, Terraform/OpenTofu, and Git workflows.
• Build automated deployment workflows including PXE, Preseed, and cloud-init.
• Operate observability platforms using Prometheus, Grafana, Alertmanager, etc.
• Define and improve SLIs, SLOs, alerting, and reliability practices.
• Lead infrastructure incident response, on-call, and post-incident improvements.
• Maintain on-call processes across distributed environments.
• Work near hardware layer (IPMI/Redfish, BMCs, RAID, GPU infra).
• Manage virtualization platforms (Proxmox, KVM/libvirt, OpenStack, VMware).
• Build and maintain internal tooling for host discovery, IPAM, and health checks.
• Own lifecycle activities: onboarding, maintenance, decommissioning, drift, runbooks.

Skills

Linux administration

MAAS provisioning

Kubernetes production

Networking

Automation (Ansible/Bash/Python)

Terraform/OpenTofu

Observability (Prometheus/Grafana)

Incident response

On-call operations

Proxmox/KVM/OpenStack/VMware

GPU infrastructure experience

BMC/IPMI/Redfish

Tools

Prometheus/Grafana

OpenTofu/Terraform

Git-based workflows

Job description

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