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Addition+

Security Engineer

On site

Hampshire, United kingdom

Freelance

16-12-2025

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Skills

CI/CD Kubernetes Documentation and Reporting CI/CD Pipelines

Job Specifications

Security Engineer

Join a fast-growing defence technology company working at the forefront of secure innovation. You’ll help design, protect, and enhance mission-critical systems that make a real impact in the UK’s national security and defence space.

Role Overview

Location: Hampshire

Package: Competitive rate + benefits

Industry: Defence & Security Technology

What You’ll Be Doing

Configure, deploy and maintain advanced security tools, including SIEM and vulnerability scanners.
Develop alerts, dashboards and playbooks to detect and respond to incidents quickly.
Manage and mitigate technical vulnerabilities across secure environments.
Implement and document secure system configurations and lockdowns.
Support incident triage with the wider security operations team.
Work closely with technical teams to embed security best practices throughout CI/CD pipelines.

Main Skills Needed

Hands-on experience with SIEM configuration and management.
Solid understanding of vulnerability management and threat frameworks (e.g. MITRE ATT&CK).
Familiarity with securing CI/CD pipelines and modern cloud-based infrastructure.
Strong documentation and reporting skills.
(Bonus) Experience in defence or government environments, and familiarity with MOD policies such as JSP 440.
(Bonus) Knowledge of tools like Elastic Security SIEM, Nessus/Tenable, Kubernetes.

What’s in It for You

Be part of a team blending deep technical talent with operational expertise.
Work on complex, high-impact projects in a secure, fast-moving sector.
Access to cutting-edge technology and real opportunities for growth.
Hybrid working and a culture built around collaboration, curiosity, and innovation.
Join a company backed by a global technology leader, offering stability and scale with the agility of a smaller team.

We’ll keep this simple: if it sounds good, get in touch.

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.

By applying you are confirming you are happy to be added to the Addition Solutions mailing list regarding future suitable positions. You can opt out of this at any time simply by contacting one of our consultants.

About the Company

Looking for top talent? Look no further than Addition+! Our team of experienced recruiters have a deep understanding across multiple industries, hiring trends and technologies. At Addition, we specialise in sourcing and placing highly skilled professionals in a variety of sectors including IT & Digital, Finance, HR & Talent, Property Management, Operations, Senior Appointments, and Public Sector. We pride ourselves on our personalised approach towards recruitment as we take the time to understand your unique hiring needs a... Know more