
Senior Windows & Linux Systems Administrator
- Cambridge
- £55,000-65,000 per year
- Permanent
- Full-time
What you'll be doing:
- Managing and supporting Windows Server environments (AD, Group Policy, DNS, DHCP, Exchange/365).
- Administering and maintaining Linux systems across production and test environments.
- Overseeing networking infrastructure (firewalls, switches, routing, VPNs, VLANs).
- Implementing and monitoring security best practices across systems and networks.
- Troubleshooting and resolving complex technical issues across multi-platform environments.
- Working closely with project teams to deliver upgrades, migrations, and new deployments.
- Producing and maintaining technical documentation for systems and processes.
- Proven experience as a Systems Administrator / Infrastructure Engineer at senior level.
- Strong hands-on expertise with Windows Server (2016/2019/2022) and Active Directory.
- Solid knowledge of Linux systems administration (e.g., Ubuntu, CentOS, RedHat).
- Strong networking skills (TCP/IP, routing, switching, firewalls, VPNs, VLANs).
- Experience with virtualisation (VMware/Hyper-V) and cloud platforms (Azure or AWS a plus).
- Familiarity with backup solutions, monitoring tools, and scripting/automation (PowerShell, Bash).
- Excellent problem-solving skills and ability to work both independently and in a team.