Principal Cyber Security Consultant - Critical National Infrastructure

A fast-growing cyber security consultancy is dedicated to helping organisations remain secure, resilient, and compliant in an increasingly digital world. With a leadership team that sees security and data protection as enablers of progress, the company is built on collaboration, integrity, and a strong focus on delivering meaningful outcomes for clients.

The Opportunity

The organisation is seeking a Principal Consultant to lead its work across the Critical National Infrastructure (CNI) space. This is a senior role focused on delivering high-impact cyber security engagements while driving growth within the public sector domain.

Applicants must be eligible for SC-level security clearance due to the nature of the work.

Key Responsibilities

This position suits an experienced consultant with a strong track record in the CNI or public sector space. The Principal Consultant will play a pivotal role in shaping client programmes, leading delivery teams, and influencing the strategic direction of the consulting function.

Key duties include:

• Building and maintaining relationships with senior stakeholders (CISOs, CIOs, CTOs) across public sector and CNI organisations
• Leading the successful delivery of complex cyber security projects
• Developing and mentoring high-performing consulting teams
• Enhancing internal methodologies and delivery frameworks
• Supporting business development through proposal creation and opportunity identification
• Providing insight on emerging threats, regulatory trends, and industry best practices
• Driving thought leadership and contributing to the organisation’s external profile

Candidate Profile

• Demonstrable experience within a Consultancy environment leading major cyber or transformation programmes within regulated CNI sectors (e.g. utilities, energy, transport)
• Strong understanding of OT environments and their unique security challenges, including legacy systems and frameworks like CAF, IEC 62443, or NIST 800-82
• Familiarity with sector-specific compliance and regulatory reporting requirements.
• Proven leadership and stakeholder engagement skills
• Ability to link cyber strategy to broader organisational objectives and risk frameworks
• Comfortable operating across both technical detail and strategic planning

What’s on Offer

• Competitive salary with a 10% annual bonus
• 25 days holiday (rising with length of service)
• Flexible, hybrid working arrangements
• Private medical and life insurance
• Enhanced parental leave policies