Senior System Administrator

About the role

We are looking for a Senior System Administrator to join our IT team. The role will own the Linux‑based infrastructure, virtualization platforms and production‑grade applications, acting as the escalation point for L1/L2 support and ensuring high availability of services.

Key responsibilities

• Administer, maintain and troubleshoot Linux servers and workstations (Rocky Linux, Ubuntu, other Enterprise Linux distributions).
• Manage virtualization environments such as oVirt, Proxmox, VMware, Nutanix AHV or Hyper‑V, including installation, upgrades, patching and capacity planning.
• Monitor system health, perform performance tuning, and proactively resolve infrastructure incidents.
• Serve as the final technical escalation point for complex production issues, handling incidents from L1/L2 engineers and ensuring SLA compliance.
• Provide technical guidance, mentoring and knowledge sharing to junior staff.
• Support Digital Content Creation (DCC) applications used in VFX production (Autodesk Maya, Nuke, Houdini, Adobe Creative Cloud, 3DEqualizer) and troubleshoot workstation performance for artists.
• Develop automation scripts in Bash and Python to streamline routine administration tasks.
• Troubleshoot LAN/WAN connectivity, configure VLANs, Layer‑2 switching, routing, managed switches and work with firewall, DNS, DHCP and VPN services.
• Create and maintain technical documentation, SOPs, knowledge‑base articles and system diagrams while adhering to security and change‑management policies.

Required profile

• Proven senior‑level experience administering Linux servers and desktops in an enterprise environment.
• Demonstrated ability to manage complex virtualization platforms and resolve escalated infrastructure incidents.
• Experience supporting L1/L2 engineering teams and working with enterprise ticketing systems.
• Strong analytical skills with a track record of conducting root‑cause analysis and implementing preventive measures.

Required skills

• Rocky Linux
• Ubuntu
• Enterprise Linux distributions
• oVirt
• Proxmox
• VMware
• Nutanix AHV
• Hyper‑V
• Shell scripting (Bash)
• Python
• LAN/WAN networking
• VLAN configuration
• Layer‑2 switching and basic routing
• Managed switches
• Firewall, DNS, DHCP, VPN services
• Jira
• ServiceNow
• ManageEngine
• Freshservice
• GLPI
• Autodesk Maya
• Nuke
• Houdini
• Adobe Creative Cloud
• 3DEqualizer