Linux Systems Engineer | Outside IR35 | Remote

Linux Systems Engineer | Outside IR35 | Remote

We are looking for a Linux Systems Engineer to support the upgrade and migration of established infrastructure services. This is a hands‑on opportunity covering Linux administration, legacy Unix migration, security improvements and operational automation.

You'll take ownership of technical discovery, production upgrades and the migration of an existing Solaris service onto RHEL. Working alongside infrastructure, security and operational teams, you'll ensure changes are thoroughly validated and supported by clear documentation and a practical handover.

Key Responsibilities

• Assess existing infrastructure, service configurations and dependencies to establish requirements and plan changes.
• Deliver Debian production upgrades using an established approach, verifying functionality and bringing systems onto a supported baseline.
• Build and configure a replacement RHEL environment, migrate services from Solaris and manage production cutover.
• Strengthen SSH/SFTP controls and account administration in line with agreed security requirements.
• Improve configuration automation, file-transfer and housekeeping scripts, monitoring and operational checks.
• Produce runbooks, share knowledge with support teams and document outstanding risks and recommendations.

Essential

• Strong hands‑on Linux systems administration experience across Debian and Red Hat Enterprise Linux.
• Experience delivering production upgrades and migrating Unix/Linux services.
• Ability to investigate system configurations, dependencies and operational issues.
• Practical knowledge of SSH, SFTP, access controls and user account management.
• Scripting and automation experience for configuration, file transfers and routine maintenance.
• Experience planning cutovers, validating changes and preparing operational documentation.
• Clear communication skills and the ability to work closely with security and support teams.

Desirable

• Experience migrating workloads from Solaris to RHEL.
• Familiarity with HSCN-connected environments.
• Experience modernising legacy infrastructure and handing services over to ongoing support teams.

The Details

• Contract role
• Duration: Until the end of December initially and then until March + extensions
• IR35 status: Outside IR35
• Rate: £#removed#
• Location: Remote

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