Senior Systems Administrator

 

Description:

The right candidate will be responsible for maintaining our current systems and standing up new ones, supporting a film laboratory and post-production facility that must meet the security standards. This is an on-site role.

We are not looking for someone who meets every criterion to the letter. The right person has a positive attitude, learns quickly, adapts readily and gets stuck in. If that sounds like you and you have most of the experience above, we would like to hear from you.

 

About Us

Cinelab Film & Digital is the UK’s only full-service Film Laboratory and Digital Dailies Facility. We provide an industry-leading range of services for film and digital productions, working on some of the most exciting projects in the industry. Our expertise spans film processing, printing, scanning, restoration, and preservation, serving both modern productions and archival projects.

 

Key Responsibilities

•      Building, administering and hardening our Linux servers and services, including patching, configuration and automation.

•      Administering and maintaining our Microsoft 365 environment, including Entra ID, Exchange Online and related services.

•      Managing Active Directory and Samba, including ACLs, permissions structures, and user provisioning and deprovisioning.

•      Managing storage and server infrastructure.

•      Managing network and switch infrastructure, including configuration, troubleshooting and documentation.

•      Administering Jamf for Mac device management, and supporting a mixed Mac, Linux and Windows estate.

•      Managing and maintaining our Fortigate firewalls, including policy, rules and VPN.

•      Operating our Wazuh SIEM: tuning rules, triaging alerts and supporting incident response.

•      Running and developing our Proxmox virtualisation platform.

•      Planning, building and documenting new systems and services, taking them from concept to production.

•      Supporting security and compliance requirements, including evidence gathering for audits.

•      Providing day-to-day support to staff, including email and Microsoft 365 queries, account and password issues, device and software problems, and access requests. Working with colleagues across production and technical teams.

 

Essential Skills & Qualifications

•      Strong Linux administration experience (e.g. Debian/Ubuntu or RHEL-based distributions), including the command line, services, patching and security hardening.

•      Proven experience administering Microsoft 365 (Entra, Exchange and associated tooling).

•      Strong working knowledge of Active Directory and/or Samba, including ACLs and user provisioning.

•      Experience managing servers and storage.

•      Solid networking knowledge and experience managing managed switches.

•      Experience with Jamf and Mac fleet management.

•      Confident across macOS, Linux and Windows.

•      Experience managing Fortigate firewalls.

•      Experience with a SIEM platform, ideally Wazuh, and with virtualisation, ideally Proxmox.

•      Comfortable with scripting and automation (e.g. Bash, PowerShell, Python).

•      Clear documentation habits and a methodical approach to change.

•      Good communication skills and a patient, practical approach to supporting non-technical users.

 

Desirable

•      Experience with Linux infrastructure tooling such as Docker, Ansible.

•      Experience working in a security-audited environment (TPN+, MPA).

•      Background in post-production, media or broadcast environments.

•      Relevant certifications (e.g. Microsoft, Fortinet, Linux, networking).