Linux System Administrator

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., 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

Strong hands-on experience administering Linux environments (eg, 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

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.