Principal Cyber Assurance Advisor (OT/Technical Arch./Supply Chain)

We are recruiting on behalf of a client in the nuclear / Critical National Infrastructure (CNI) sector for a Cyber Assurance Principal Advisor to lead the delivery of second-line cyber assurance across key domains including OT, technical architecture, and supply chain. This role ensures cyber security controls are effectively assessed, risks are independently evaluated, and assurance activities are aligned with organisational priorities. You will oversee a team of advisors, manage assurance planning and execution, and act as a key liaison between assurance, operational teams, and senior stakeholders. What you'll do Deliver second-line assurance activities across either OT, technical architecture, or supply chain domains (these are individual Principal-level roles) Conduct control effectiveness reviews, risk-based assessments, and thematic assurance activities Provide expert input into the development of assurance frameworks, methodologies, and reporting Collaborate with first-line teams and third-line audit to ensure comprehensive assurance coverage Produce assurance reports and dashboards for governance forums and regulatory stakeholders Support regulatory inspections and audits, including evidence collation and response coordination Track and verify remediation of assurance findings and contribute to lessons learned Maintain awareness of emerging threats, technologies, and regulatory expectations to inform assurance planning Lead, mentor, and develop a team of cyber assurance advisors to build capability and consistency Promote a culture of cyber risk awareness and accountability across the organisation What we're looking for Strong experience in cyber assurance, audit, risk management, or control testing within a regulated environment In-depth understanding of cyber security frameworks (e.g., NCSC CAF, ISO 27001, NIST CSF, NIST 800-53) Domain-specific knowledge in at least one of: OT, technical architecture, or supply chain security Strong analytical, reporting, and stakeholder engagement skills Degree or equivalent experience in cyber security, engineering, or a related field Relevant certifications (e.g., CISA, CISSP, ISO 27001 Lead Auditor, GIAC, CRISC) Desirable: Experience in the nuclear or CNI sector; familiarity with ONR SyAPs, NISR 2003, and HMG SPF; experience with assurance automation or continuous control monitoring; knowledge of risk-based assurance methodologies and tooling What's on offer Annual bonus of up to 15%, made up of company and personal performance Attractive defined contribution pension scheme – company matches up to 13.5% for a 7% employee contribution 30 days annual leave + bank holidays, plus ability to purchase an extra 2.5 days per year Ability to carry over 10 days annual leave each financial year TPBN1_UKTJ