Cyber Security Assurance Lead

We are seeking an experienced SC Cleared Cyber Security Assurance Lead to oversee and drive the Security by Design (SbD) workstream for a major assurance process project. This role requires deep expertise in security governance, cloud architecture assurance, and security control frameworks, with the ability to work closely with client stakeholders to ensure that all SbD requirements, artefacts, and controls are correctly identified, implemented, and evidenced throughout the project lifecycle.

Key Responsibilities:

Lead the Security by Design (SbD) Workstream:

Own and lead the end‑to‑end Security by Design assurance process across all project phases.
Determine the required SbDartefacts, ensuring they align with organisational security policies and relevant regulatory requirements.

Stakeholder Engagement & Governance:

Work collaboratively with client security, architecture, risk, and delivery stakeholders to gather information,validate assumptions, and ensure clear alignment with security expectations.

Assurance & Compliance:

Conduct detailed assessments of proposed architectures and solutions against NIST 800‑53 security controls, identifying control gaps and required mitigations.

Required

Skills & Experience:

Strong working knowledge of NIST 800‑53 controls and their application to Enterprise and government‑grade systems.
Cloud security architecture expertise, with the ability to review and challenge designs across AWS, Azure, and hybrid architectures.
In‑depth understanding of cryptographic principles, encryption standards, key management, and secure protocol design.
Knowledge of cross‑domain solutions, data flows, and security boundary controls.
Demonstrated experience leading

Security by Design or Secure Architecture Assurance activities in complex

Environments.
Active UK SC Clearance is essential due to the nature of the project and the sensitivity of systems involved.

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