Principal OT Cybersecurity Consultant

Principal OT Cybersecurity Consultant
Location: Reading – On-site / Hybrid working
Contract: 12 months
Rate: Negotiable
Clearance: Active UK DV Clearance
The Opportunity
We are looking for an experienced Principal OT Cybersecurity Consultant to support the delivery of secure Operational Technology (OT) systems within a highly regulated, safety-critical environment.
This is an excellent opportunity for an accomplished OT cybersecurity professional with a strong background in Industrial Control Systems (ICS), cyber risk management and security architecture. You will play a key role in strengthening digital resilience across complex industrial environments while providing technical leadership on major security programmes.
Location & Working Pattern
The role will be based in Reading, operating on an on-site / hybrid working arrangement. Due to the sensitive nature of the programme and the requirement for active UK DV clearance, candidates must be able to attend site as required.
Key Responsibilities

• Lead the design and implementation of secure OT / ICS cybersecurity architectures.
• Conduct and oversee cybersecurity risk assessments, security reviews and assurance activities.
• Apply recognised industry and regulatory frameworks, including:
  • IEC 62443
  • NCSC Cyber Assessment Framework (CAF)
  • NIS Regulations
  • ONR Security Assessment Principles (SAPs)
• Support security accreditation and assurance activities.
• Engage effectively with senior stakeholders, technical teams and regulatory bodies.
• Provide technical leadership and subject matter expertise across OT cybersecurity initiatives.
• Support solution development and wider consultancy activities across Critical National Infrastructure (CNI), nuclear and defence environments.
• Contribute to bids and the development of client relationships where required.

Essential Experience & Skills
To be considered for this position, you should have:

• Significant experience within OT / ICS cybersecurity, including security architecture and cyber risk management.
• Strong knowledge and practical understanding of IEC 62443, NCSC CAF, NIS Regulations and ONR SAPs.
• Previous experience working within safety-critical, regulated or high-hazard environments.
• Strong consultancy experience, with the ability to operate confidently in client-facing environments.
• Excellent stakeholder engagement and communication skills.
• The ability to provide technical leadership across complex cybersecurity programmes.
• Active UK DV clearance – essential.

Desirable Qualifications
Relevant professional certifications would be advantageous, including:

• CISSP – Certified Information Systems Security Professional
• CISM – Certified Information Security Manager
• GICSP – Global Industrial Cyber Security Professional

The NRL Group connect global companies with the right people to bring engineering projects to life. Supporting contracting companies with energy transition plans and working with our clients to create a cleaner, greener future.
 
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