On-Prem Linux Infrastructure Engineer (HPC)

Fractile; West of England; On-site; GBP 35,000 - 55,000; Full time

Benefits offered by this job

Equity

Private Medical

Dental & Vision

Pension Plan

25 Days Holiday

Job summary

Fractile is building hardware and software to unlock AI at scale from the UK. We are seeking a hands-on Linux systems administrator to own on‑premise compute infrastructure.

You will work with Ansible, Prometheus, Grafana, and Slurm to deploy, monitor and maintain our cluster stack. You will diagnose networking, storage, and performance issues and collaborate with engineers across hardware and software teams to keep systems healthy and productive.

Qualifications

• 2-3+ years of hands‑on Linux system administration experience.
• Good working knowledge of monitoring solutions (Prometheus, Grafana, Zabbix, or similar).
• Solid networking fundamentals — TCP/IP, DNS, VLANs, routing, basic troubleshooting.
• Good understanding of storage concepts — network filesystems, parallel/distributed filesystems, disk/volume management, basic performance troubleshooting.
• Comfortable working from the command line and with scripting (Bash, Python, or similar) to automate routine tasks.
• A methodical, curious approach to troubleshooting, with the ability to pick up new tools and technical areas quickly.
• Comfortable working independently and taking ownership of problems through to resolution.

Responsibilities

• Help maintain and troubleshoot a fleet of on-premise Linux (Rocky/RHEL-family) servers.
• Support the deployment and upkeep of on-premise compute infrastructure using infrastructure-as-code tooling (e.g. Ansible).
• Assist with monitoring and observability — setting up and maintaining tooling for resource utilisation, service health, and machine failures (e.g. Prometheus, node_exporter, Grafana, Zabbix).
• Help diagnose and resolve networking issues (DNS, VLANs, bonding, routing) and storage issues (network filesystems, capacity management, performance troubleshooting).
• Support day-to-day operation of a cluster compute/job scheduling environment (e.g. Slurm).
• Help with user and identity management tasks (e.g. FreeIPA/LDAP), including onboarding and access provisioning.
• Document infrastructure changes and contribute to runbooks and playbooks.
• Work with engineers across the organisation to understand and help resolve infrastructure-related bottlenecks.

Skills

Linux Administration

Monitoring Tools

Networking Fundamentals

Scripting (Bash/Python)

Troubleshooting

Tools

Ansible

Prometheus

Grafana

Zabbix

Slurm

FreeIPA/LDAP

Job description

Fractile is building hardware and software to unlock AI at scale from the UK. We are seeking a hands-on Linux systems administrator to own on‑premise compute infrastructure.

You will work with Ansible, Prometheus, Grafana, and Slurm to deploy, monitor and maintain our cluster stack. You will diagnose networking, storage, and performance issues and collaborate with engineers across hardware and software teams to keep systems healthy and productive.