Senior Linux Engineer

Addition; Milton Keynes; Hybrid; GBP 65,000 - 90,000; Full time

Benefits offered by this job

On-call rota

Hybrid work

Job summary

Addition is seeking a senior Linux-focused contractor to support and improve enterprise Linux platforms in a government/secure technology setting. The role involves automation, containerisation and platform development in a hybrid setup with onsite work at Milton Keynes.

You will lead incidents, upgrades and technical projects while maintaining documentation and working within security processes. The contract is initially six months, inside IR35, with a paid on-call rota and a 37.5+ hour

Qualifications

• Advanced Linux troubleshooting across enterprise environments.
• Experience supporting secure, highly available systems.
• Hands-on automation to improve operational processes.
• Experience building Linux development environments and services.
• Containers and modern deployment practices.
• Working with VMware technologies.
• Experience within service management and security frameworks.
• Strong documentation and stakeholder communication.
• Certifications such as RHCSA, RHCE, LFCS or LPIC are advantageous.

Responsibilities

• Supporting and administering enterprise Linux platforms across secure environments.
• Investigating complex infrastructure incidents and performance issues to resolution.
• Building and maintaining stable, scalable Linux environments for applications and development teams.
• Using automation to streamline infrastructure delivery and reduce manual processes.
• Containerising applications and supporting modern deployment practices.
• Delivering platform upgrades and infrastructure improvements alongside BAU work.
• Producing clear technical documentation and maintaining operational records.
• Leading technical conversations around platform development and infrastructure strategy.

Skills

Linux troubleshooting

Secure environments

Automation & scripting

Linux development environments

Containers

VMware technologies

Service management & security

Documentation & communication

Technical leadership

Certifications (RHCSA/RHCE/LFCS/LPIC)

Tools

VMware technologies

Job description

Join a highly secure, business-critical technology environment where reliable infrastructure really matters. You’ll take a senior role supporting and improving enterprise Linux platforms, combining hands-on troubleshooting with automation, containerisation and platform development.

Role Overview

Duration: 6-month initial contract, likely extension | Inside IR35 | 37.5+ hours per week | Paid on-call rota

Industry: Government / Secure Technology & Infrastructure

What You’ll Be Doing

• Supporting and administering enterprise Linux platforms across secure, business-critical environments.
• Investigating complex infrastructure incidents, performance problems and platform issues through to resolution.
• Building and maintaining stable, scalable and secure Linux environments for applications and development teams.
• Using automation to streamline infrastructure delivery, reduce manual processes and improve operational efficiency.
• Containerising applications and supporting modern deployment practices across the estate.
• Delivering platform upgrades, infrastructure improvements and technical project work alongside BAU responsibilities.
• Supporting associated VMware environments and technologies.
• Working within established service management, operational and security processes.
• Producing clear technical documentation and maintaining accurate operational records.
• Leading technical conversations around platform development, improvements and infrastructure strategy.
• Sharing knowledge across the wider team and helping develop internal technical capability.
• Participating in a paid on-call rota, including overnight weekday and 24-hour weekend or bank holiday cover when scheduled.

Main Skills Needed

• Advanced Linux troubleshooting skills, including resolving complex infrastructure and performance issues.
• Experience supporting secure, highly available or business-critical technology environments.
• Hands-on knowledge of infrastructure automation and improving operational processes through automation.
• Experience building and maintaining Linux-based development environments, applications and services.
• Practical understanding of containers, application deployment and modern infrastructure practices.
• Working knowledge of VMware technologies.
• Experience operating within structured service management and security frameworks.
• Strong documentation, stakeholder communication and technical leadership skills.
• Certifications such as RHCSA, RHCE, LFCS or LPIC-1/LPIC-2 would be advantageous.

What’s in It for You

• Work on complex Linux infrastructure where security, resilience and performance are genuinely business-critical.
• A long-term contract opportunity, with an initial six-month engagement and potential to extend.
• Hybrid working with a clear onsite structure at Hanslope Park.
• Exposure to enterprise Linux, automation, containers, VMware and modern deployment approaches.
• A senior position where you can influence platform improvements and technical direction.
• Separately paid on-call participation, with rotas typically provided in advance.
• Opportunities to broaden your experience across secure infrastructure projects and enterprise-scale environments.
• Occasional exposure to other technology environments across London and the Milton Keynes area.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

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