Infrastructure Security Architect - DV Cleared

CBSbutler Holdings Limited trading as CBSbutler
Basingstoke, Hampshire, United Kingdom
Today
£700 – £800 pd

Salary

£700 – £800 pd

Job Type
Contract
Work Pattern
Full-time
Work Location
On-site
Seniority
Senior
Security Clearance
Required
Posted
25 Jun 2026 (Today)

Security Architect - Defence / Secure Infrastructure

+ Long term contract

+ Outside IR35

+ DV Cleared

+ Hampshire based

+ Rate on application

We are seeking an experienced Security Architect to support the design, assurance and accreditation of highly secure infrastructure and network environments within a classified defence programme.

Working within a multi-disciplinary engineering team, you will define security architectures, conduct threat modelling and risk assessments, and ensure compliance with stringent security and accreditation requirements across complex IT and networked systems.

Key Skills & Experience

Proven Security Architecture experience within Defence, MOD, National Security or other highly regulated environments.

Strong understanding of secure infrastructure, network and platform architectures.

Experience with:

Network segmentation and zoning

Firewalls, IDS/IPS and boundary security controls

PKI, encryption and key management

Identity & Access Management (IAM/PAM)

Secure-by-Design principles

Threat modelling and security risk assessment

Experience producing security architecture artefacts and supporting accreditation activities.

Knowledge of NCSC guidance, JSP 440, Secure by Design and defence security standards.

Security certifications such as CISSP, SABSA, TOGAF or equivalent desirable.Please note: Due to the highly classified nature of the programme, this role requires full-time onsite attendance in Hampshire

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