Linux System Administrator

Gleeson Recruitment Group
United Kingdom
Last week
Posted
10 Apr 2026 (Last week)

We are seeking a skilled Linux Engineer / Linux Systems Administrator to take ownership of our client's large scale Linux environment consisting of approximately 100 servers. This role will focus on Business-as-Usual (BAU) operations, maintenance, stability and performance, while also contributing to an ongoing infrastructure modernisation programme.

This is an excellent opportunity for a technically strong Linux professional who enjoys both operational responsibility and forward-looking project work.

Key Responsibilities

BAU & Operational Support

* Administer, monitor, and maintain circa 100 Linux servers across production and non-production environments

* Perform system patching, upgrades and security hardening

* Manage user access, permissions and authentication services

* Troubleshoot performance issues, outages and system alerts

* Maintain high availability, reliability and up time standards

* Manage backups, restores and disaster recovery processes

Modernisation & Project Work

* Contribute to infrastructure improvement and automation initiatives

* Support migration, consolidation or upgrade projects

* Assist with cloud, virtualisation or containerisation initiatives where applicable

* Identify opportunities for efficiency, performance and cost optimisation

Documentation & Governance

* Maintain clear technical documentation and runbooks

* Follow change management and incident management processes

* Work collaboratively with network, security and application teams

Required Skills & Experience

* Strong hands-on experience administering Linux environments (e.g., Ubuntu, CentOS, Red Hat, Debian or similar)

* Solid understanding of server hardware, storage and virtualisation platforms

* Experience with patch management and security best practices

* Proficiency with shell scripting (Bash or similar)

* Knowledge of monitoring and logging tools

* Experience supporting large-scale server estates

Desirable

* Exposure to cloud platforms (AWS, Azure, GCP)

* Experience with automation tools (Ansible, Puppet, Chef, Terraform)

* Knowledge of containers (Docker, Kubernetes)

* Understanding of networking fundamentals and firewalls

* ITIL or relevant Linux certifications

Personal Attributes

* Strong problem-solving and analytical skills

* Ability to prioritise workload in a fast-paced environment

* Clear communication and documentation abilities

* Proactive and improvement-focused mindset

What's on Offer

* Opportunity to influence and shape infrastructure modernisation

* Exposure to both operational stability and transformation projects

* Supportive technical environment with room for growth

* Competitive salary and benefits package

At Gleeson Recruitment Group, we embrace inclusivity and welcome applicants of all backgrounds, experiences, and abilities. We are proud to be a disability confident employer.

By applying you will be registered as a candidate with Gleeson Recruitment Limited. Our Privacy Policy is available on our website and explains how we will use your data

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