Senior Infrastructure Engineer

Addition; Farnborough; On-site; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Competitive pension contribution

Bonus scheme

Private medical cover

Life assurance

On-site gym

Job summary

Addition is seeking an experienced infrastructure professional to design, maintain and improve secure environments in critical UK contexts. You will support on-prem, cloud, and hybrid platforms, driving automation and secure-by-design architectures, while collaborating with engineers and delivery teams to meet stringent security and resilience requirements.

Based in Farnborough, the role offers a competitive package with pension, bonus and extensive benefits, including private medical cover and

Qualifications

• : Hands-on experience designing and maintaining secure infrastructure in regulated environments.
• : Proficient in cloud platforms and hybrid/mybrid environments with integration into customer projects.
• : Strong collaboration across engineering, architecture, and delivery teams to implement secure-by-design solutions.

Responsibilities

• Designing, maintaining, and improving secure infrastructure across multi-classification environments
• Supporting public, private, and hybrid cloud platforms across internal systems and customer projects
• Managing and enhancing secure collaboration, development, and virtualised environments
• Performing infrastructure maintenance, patching, upgrades, and hardening through change control
• Monitoring systems, triaging alerts, and resolving incidents to maintain stability
• Working with engineers and delivery teams to ensure secure-by-design outcomes
• Supporting Microsoft 365 and cloud-based SaaS offerings
• Driving automation through scripting and infrastructure-as-code
• Advising project teams on infrastructure and best practices
• Contributing to documentation and knowledge sharing in the team
• Supporting delivery within Agile environments

Skills

Linux

VMware vSphere

Azure Admin

Kubernetes/OpenShift

Networking

Automation scripting

DevSecOps

Monitoring tools

Agile delivery

Tools

PowerShell

Ansible

Terraform

OpenShift

TKGI

Job description

Join a business delivering secure, high-impact technology solutions into some of the UK’s most critical environments. This is an opportunity to work on complex infrastructure challenges where security, resilience, and innovation sit at the heart of everything.

Role Overview:

• Location: Farnborough
• Package: Competitive salary + bonus + extensive benefits
• Industry: Defence & National Security Technology

What You’ll Be Doing:

• Designing, maintaining, and improving secure infrastructure across multi-classification environments
• Supporting public, private, and hybrid cloud platforms across both internal systems and customer projects
• Managing and enhancing secure collaboration, development, and virtualised environments
• Performing infrastructure maintenance, patching, upgrades, and hardening activities through change control processes
• Monitoring systems, triaging alerts, and resolving incidents to maintain platform stability and performance
• Working closely with engineers, architects, and delivery teams to deliver secure-by-design solutions
• Supporting Microsoft 365 and cloud-based SaaS offerings
• Driving automation initiatives through scripting and infrastructure-as-code practices
• Advising project teams and stakeholders on infrastructure and support best practice
• Contributing to continuous improvement, technical documentation, and knowledge sharing across the wider team
• Supporting technical delivery within Agile environments

Main Skills Needed:

• Linux systems knowledge across environments such as RedHat, Ubuntu, or CentOS
• VMware infrastructure administration including vSphere and vCenter
• Azure and Microsoft 365 administration experience
• Kubernetes and container platform exposure, including OpenShift or VMware TKGI
• Networking fundamentals and infrastructure troubleshooting capability
• Automation and scripting skills using tools such as PowerShell, Ansible, or Terraform
• Understanding of secure or highly regulated environments
• Exposure to DevSecOps tooling and security-focused infrastructure practices
• Experience with monitoring, alerting, and vulnerability management tools
• Strong problem-solving skills with a collaborative mindset
• Comfortable working within Agile delivery teams

What’s in It for You:

• Work on genuinely meaningful projects with real operational impact
• Be part of a collaborative, technically strong engineering environment
• Access ongoing professional development and certification support
• Competitive pension contribution and bonus scheme
• Private medical cover and life assurance
• On-site facilities including gym, café, restaurant, and breakout spaces
• Long-term career growth within a rapidly expanding technology business
• Opportunity to work with cutting-edge cloud, security, and infrastructure technologies

This might just be the one you’ve been waiting for.

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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