Linux Engineer

ISR RECRUITMENT LIMITED; Ribble Valley; Remote; GBP 92,000 - 97,000; Full time

Job summary

ISR RECRUITMENT LIMITED is seeking an experienced Linux Engineer for a 3-month remote contract in the public/secure sector. You will upgrade Debian production environments, migrate to a Red Hat Enterprise Linux platform, and strengthen SSH/SFTP security while enhancing automation and monitoring across critical services.

The role involves technical discovery, migration planning, production cutover, and creating runbooks for support teams.

Qualifications

• Experience with production upgrades and migrations.
• Strong knowledge of SSH/SFTP security and Linux account management.
• Willing to undergo basic level of security clearance prior to starting.

Responsibilities

• Undertake technical discovery and migration requirements.
• Complete Debian upgrades and validate services.
• Design, build and configure replacement RHEL service with migration and validation.
• Implement security controls and SSH/SFTP configuration changes.
• Improve automation, monitoring and operational supportability.
• Produce runbooks and document residual risks and recommendations.

Skills

Linux administration

Debian

RHEL

SSH/SFTP security

Scripting

Automation

Monitoring

Documentation

Job description

Linux Engineer

• 3-month contract (initially)
• Remote Working
• Outside-IR35
• Market Rates (c£500 to £525 per day)

We are seeking an experienced Linux Engineer to support the remediation, migration and security improvement of critical Linux-based services within a public sector environment.

The role will involve upgrading Debian production environments, migrating an existing Solaris/HSCN service to a replacement Red Hat Enterprise Linux (RHEL) platform, strengthening SSH/SFTP security and improving automation, monitoring and operational supportability.

Skills and Experience

• Strong Linux systems administration and engineering experience.
• Hands-on experience with Debian and Red Hat Enterprise Linux (RHEL).
• Experience supporting production upgrades, service migrations and cutovers.
• Strong knowledge of SSH/SFTP, Linux security and account management.
• Scripting and automation skills, alongside monitoring, troubleshooting and technical documentation.
• This is an excellent opportunity for a hands-on Linux Engineer with strong production support, migration and security experience.

Role and Responsibilities

• Undertake technical discovery, reviewing existing infrastructure, configurations, service dependencies and migration requirements.
• Complete Debian production upgrades, validate services and establish a supported baseline.
• Design, build and configure the replacement RHEL service, including migration, production cutover and validation.
• Implement security controls, account-management improvements and SSH/SFTP configuration changes.
• Improve automation, transfer scripts, housekeeping processes and monitoring.
• Produce operational runbooks, transfer knowledge to the support team and document residual risks and recommendations.

N.B. Candidates will have or be willing to undergo a basic level of security clearance prior to starting the role (5-7 days lead time)