Senior Linux Systems Administrator

Location: Cambridge
Salary: 65-75K
Employment Type: Full time
About the Role

We are seeking an experienced Linux Systems Administrator with a strong networking background to join our technical team. The ideal candidate will have in-depth experience managing Ubuntu and Debian-based Linux systems, along with a solid understanding of IPv4 and IPv6 networking in production environments.
You will be responsible for maintaining reliable, secure, and scalable Linux infrastructure while working closely with network and cloud teams to support business-critical services.

Key Responsibilities

• Administer, maintain, and troubleshoot Ubuntu and Debian Linux systems
• Configure and manage network services using IPv4 and IPv6
• Diagnose and resolve system and network performance issues
• Implement and maintain security best practices (firewalls, access controls, patching)
• Monitor system health, availability, and capacity
• Automate routine tasks using scripting (e.g. Bash, Python)
• Document system configurations, procedures, and changes
• Collaborate with internal teams to support infrastructure projects and upgrades

Required Skills & Experience

• Proven experience as a Linux Systems Administrator
• Strong hands-on experience with Ubuntu and Debian
• Solid understanding of TCP/IP networking, including IPv4 and IPv6
• Experience with DNS, DHCP, routing, and firewall configuration
• Strong troubleshooting skills across system and network layers
• Familiarity with monitoring and logging tools
• Ability to work independently and as part of a team

Desirable Skills

• Experience with virtualization or container technologies (e.g. KVM, Docker)
• Knowledge of configuration management tools (Ansible, Puppet, or similar)
• Exposure to cloud platforms (AWS, Azure, GCP)
• Basic Scripting

• Familiarity with Cisco Meraki and Catalyst networking equipment
• Understanding of high-availability and disaster recovery concepts