Infrastructure Engineer

Addition; Farnborough; On-site; GBP 60,000 - 80,000; Full time

Benefits offered by this job

Annual bonus

25 days leave + bank holidays

Private Medical Insurance

Life Assurance

Training & certification support

Secure parking

Career development culture

Job summary

Addition is seeking an experienced Infrastructure Engineer to design, build and support secure digital environments for Defence and National Security projects. You will work with architects and delivery teams to ensure secure, resilient and scalable infrastructure across cloud and on-premises platforms.

Candidates should have hands-on experience with automation (PowerShell, Ansible, IaC), VMware, Kubernetes and Microsoft 365 in secure environments, and possess the ability to advise teams on best

Qualifications

• Experience designing, building and securing multi-classification environments.
• Experience with secure-by-design infrastructure in regulated environments.
• Ability to automate using PowerShell, Ansible and IaC tools.

Responsibilities

• Design, build and support secure digital environments across internal and customer projects.
• Maintain, secure and optimise multi-cloud and on-premises infrastructure.
• Support Kubernetes and containerised platforms within secure environments.

Skills

PowerShell

Ansible

Infrastructure as Code

Kubernetes

VMware

Cloud platforms

Security policy

Tools

Microsoft 365

Job description

Introduction

Work on Technology That Protects What Matters

We build secure digital solutions that support Defence and National Security missions. Our teams solve complex problems where reliability, security, and speed of innovation matter.

We're looking for an experienced Infrastructure Engineer who enjoys solving difficult technical challenges and wants their work to have real operational impact.

We can only progress candidates who already hold active UK Security Clearance (SC) or Developed Vetting (DV) and have experience working within secure Defence, National Security or other highly regulated environments.

What You'll Do

As an Infrastructure Engineer, you'll help design, build, support and optimise secure digital environments across internal platforms and customer projects. Working alongside architects, engineers and delivery specialists, you'll ensure infrastructure remains secure, resilient and scalable across public, private and hybrid cloud environments.

Your work may include:

• Maintaining, improving and securing multi-classification, virtualised, collaboration and development environments.
• Supporting the delivery of secure-by-design infrastructure across internal platforms and customer projects.
• Providing infrastructure support for Microsoft 365 and cloud-based environments, including public, private and hybrid cloud platforms.
• Performing infrastructure maintenance through controlled change management processes.
• Monitoring infrastructure, ticketing and alerting systems, responding to operational issues and security events.
• Triaging alerts, assessing incidents, restoring service quickly and ensuring follow-up actions are completed.
• Maintaining monitoring solutions in line with infrastructure developments.
• Ensuring servers, platforms and services are patched in accordance with security policy and vendor recommendations.
• Identifying trends, recurring issues and opportunities to improve stability, resilience and performance.
• Supporting Kubernetes and containerised platforms within secure environments.
• Administering VMware virtualisation platforms and cloud infrastructure.
• Supporting secure networking, authentication and identity services across multiple environments.
• Developing automation using PowerShell, Ansible and Infrastructure as Code technologies.
• Supporting DevSecOps tooling and secure infrastructure pipelines.
• Advising customers and project teams on infrastructure, operational support and technical best practice.
• Producing technical documentation and knowledge articles to support the wider engineering team.
• Continuously developing technical capability through research, training and industry certifications.
• Supporting business development activities by providing technical expertise where required.

About the Role

This is an opportunity to work on secure, mission-critical technology supporting Defence and National Security customers. You'll join a collaborative engineering environment where innovation, secure-by-design principles and continuous improvement are at the heart of everything we do.

Working alongside highly skilled engineers, architects and delivery specialists, you'll contribute to the design, implementation and support of modern cloud and on-premises infrastructure across highly secure environments.

Why Join Us

This is an exciting opportunity to work on cutting-edge technologies that directly support Defence and National Security outcomes.

We offer:

• Annual bonus
• 25 days' annual leave plus bank holidays
• Private Medical Insurance
• Life Assurance
• Professional training and certification support
• Secure parking
• A collaborative, supportive engineering culture with genuine opportunities for career development

UK Security Clearance

Due to the highly secure nature of this role, active UK Security Clearance (SC) or Developed Vetting (DV) is highly desirable.

We're particularly interested in candidates who currently hold active SC or DV clearance, or who have previously held clearance and are eligible for reactivation, subject to project requirements.