Linux Engineer

ISR Recruitment Ltd; United States; Remote; GBP 92,000 - 97,000; Part time

Job summary

ISR Recruitment Ltd is seeking an experienced Linux Engineer for a 3-month contract with remote working options. The role includes remediation, migration, and security improvements of Linux-based services in a public sector environment.

Responsibilities include upgrading Debian, migrating to a replacement RHEL platform, and strengthening SSH/SFTP security, with emphasis on automation, monitoring, and operational supportability. Basic security clearance may be required.

Qualifications

• 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.

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.

Skills

Linux administration

Scripting

Automation

Security practices

Documentation

Troubleshooting

Tools

Debian

RHEL

Job description

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

The Opportunity:

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)