Senior Linux Engineer

Introduction Company cultures & job summary Our client is looking for a Senior Linux System Administrator to join a specialist security team supporting a big data platform for a UK critical national infrastructure customer. You’ll need solid hands-on Linux administration experience alongside a strong understanding of IT security and infrastructure. Working Patterns and location - Hybrid - 9 days on site per fortnight Key responsibilities * Administer, maintain, and improve Linux server environments across production and development platforms. * Support and manage VMware vSphere environments, including VMs, resource allocation, and host configuration. * Develop and maintain automation solutions using Ansible to streamline deployments and configuration. * Troubleshoot complex issues across OS, networking, performance, and storage. * Support interoperability with Windows Server systems where required. * Contribute to DevOps practices and continuous improvement of the platform.

• Ensure platform security requirements are met in line with rapidly changing customer needs. Skills & experience expected to have everything: * Strong hands-on experience administering Linux environments in a production setting. * Proven ability to troubleshoot complex issues across OS, networking, storage, and performance. * Experience writing and maintaining scripts to automate tasks and configuration. * Solid understanding of IT security principles and secure infrastructure management. * Experience working with IT infrastructure in a continuous integration or DevOps environment. * Ability to manage and maintain large-scale, complex server environments. The client would also like to see some of the below, but this is not essential: * Strong experience with RHEL, Rocky Linux or similar enterprise Linux distributions. * Hands-on experience with VMware vSphere and ESXi administration. * Practical experience with Ansible or similar configuration management and automation tools.
• Proficiency in Bash shell scripting. * Solid understanding of networking, storage management, and Linux permissions. Additional benefits Annual bonus up to 10%. Pension up to 5% Employee/10% Employer. Private Medical Cover. Dental Insurance. Health Assessment. Life Assurance. Our client is committed to providing a diverse and inclusive workplace and welcomes applications from all backgrounds. Part-time opportunities/flexible working is available to suit individual needs. RECOMMEND A FRIEND: If you have professional friends/colleagues who would be interested in one of our roles and our excellent levels of service too, we’d like to recognise your recommendations with a ‘thank you’ of our own. For every friend you refer who then starts a role through Datasource either Contract or Permanent, we will send you £200 of Love to Shop Gift Vouchers & gift your friend £100 in Love to Shop Gift Vouchers as well! You will be required to hold a minimum of DV Clearance. If you do not hold an active DV Clearance, please familiarise yourself with the vetting process before applying. (c) Copyright Datasource Computer Employment Limited 2026.