Security Architect

Security Architect

Security Architect | Public Sector & Defence Consulting

Clearance needed (SC or DV considered)

Ncounter is supporting a specialist UK consultancy at the forefront of national security, defence, and public sector transformation. They are looking to add an experienced Security Architect who enjoys operating as a trusted advisor, shaping secure solutions for complex, high-impact programmes rather than sitting in a purely delivery or compliance role.

This position suits someone who has moved beyond single-project architecture and is comfortable engaging senior stakeholders, influencing design decisions, and embedding security across delivery teams. You will work across a varied portfolio of assignments, advising on risk, architecture, and secure delivery for nationally critical systems.

Key responsibilities include

• Engaging directly with client teams to understand threat landscape, risk appetite, and delivery constraints

• Defining and documenting proportionate security architectures aligned to business outcomes

• Leading threat modelling and security design reviews across digital programmes

• Selecting and allocating security controls across cloud, application, identity, and network components

• Providing architectural assurance and constructive challenge to delivery teams • Supporting the development of security policy, standards, and reusable patterns

• Advising on secure procurement and evaluating technical options

This role will appeal if you bring

• A strong background in security architecture within public sector or defence environments

• Experience operating across Secure by Design, NIST, SABSA, Zero Trust, or similar frameworks

• Hands-on exposure to cloud platforms, modern SDLCs, and CI/CD pipelines

• Confidence working across multiple classifications and complex stakeholder groups

• A consulting mindset, comfortable balancing strategic oversight with practical guidance

The consultancy offers long-term career development, varied client exposure, and the opportunity to shape security outcomes that genuinely matter. Hybrid working is standard, with client-site collaboration when required.

If you are looking for a role where your architectural judgement, leadership, and advisory skills will be fully utilised, get in touch with Ncounter for a confidential conversation.