Senior Linux Engineer

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

·        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.

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.

• 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.