Senior OT Security Consultant

Our client, a specialist OT Cyber Security consultancy supporting some of the UK's most critical national infrastructure organisations, is seeking a Senior OT Security Consultant to join their team. This permanent role provides the opportunity to work fully remotely and requires UK-wide travel for client engagements.
The role is fully remote buyt expect to travel to client sites.
Key Responsibilities:
OT Cyber Security Consulting
* Lead OT cyber security consulting engagements across critical national infrastructure sectors.
* Deliver OT security assessments across ICS, SCADA, DCS, and wider industrial control environments.
* Conduct IEC 62443 gap assessments and support customers in achieving compliance and maturity objectives.
* Perform cyber security maturity assessments using recognised frameworks such as NCSC CAF, IEC 62443, NIST SP 800-82, and ISO 27001.
* Advise clients on NIS and NIS2 compliance requirements and support readiness programmes.
* Produce remediation roadmaps, improvement plans, and strategic recommendations.
* Deliver cyber risk assessments focused on operational technology environments.
* Facilitate stakeholder workshops to identify risks, priorities, and security improvement opportunities.
Technical Leadership & Assurance
* Provide consultancy oversight across OT cyber transformation programmes.
* Review and assure engineering designs, architectures, and technical solutions.
* Collaborate with engineering teams to ensure consulting recommendations can be effectively delivered.
* Support clients in the development of OT cyber security governance, policies, standards, and procedures.
* Ensure solutions align with operational requirements, safety considerations, and regulatory expectations.
* Mentor and support junior consultants and engineers across the business.
* Contribute to the ongoing development of consulting methodologies, frameworks, and service offerings.
Business Development & Client Engagement
* Support the preparation of bids, proposals, and statements of work.
* Participate in customer meetings, workshops, and pre-sales activities.
* Provide technical subject matter expertise during business development engagements.
* Build strong relationships with customer stakeholders across engineering, operations, cyber security, and executive leadership functions.
* Identify opportunities to expand consulting engagements and support long-term customer success.
Job Requirements:
Required Experience
* Experience delivering OT Cyber Security consultancy engagements within industrial or critical infrastructure environments.
* Strong understanding of OT/ICS environments, including technologies such as SCADA, PLCs, DCS, and industrial networks.
* Experience conducting security assessments, gap assessments, or cyber maturity reviews.
* Knowledge of industry frameworks such as IEC 62443, NCSC CAF, NIS/NIS2, or equivalent OT security standards.
* Ability to identify cyber security risks and develop practical remediation recommendations.
* Experience engaging with technical, operational, and senior business stakeholders.
* Strong report writing, presentation, and workshop facilitation skills.
Technical Knowledge
Good understanding of:
- Operational Technology (OT) and Industrial Control Systems (ICS)
- SCADA and industrial automation environments
- OT cyber security risks and threat landscape
- Network segmentation and security architecture principles
- IEC 62443 and OT security best practices
- Critical National Infrastructure security requirements
- The differences between IT and OT security environments
Qualifications & Certifications
Essential
- Demonstrable OT Cyber Security experience
Desirable
- IEC 62443 qualifications
- CISSP
- GICSP
- CISM
- NCSC Chartered status
Security Clearance
Essential
- Must hold UK Security Clearance (SC) or be eligible and willing to undergo SC clearance.
- To be eligible for SC clearance, candidates must typically have resided in the UK for the required vetting period and meet UK Government security vetting requirements.
What Success Looks Like:
- Delivering high-quality OT cyber security assessments and consultancy engagements.
- Building trusted relationships with customers across CNI sectors.
- Producing clear, actionable recommendations that improve customer security posture.
- Supporting the growth of the consultancy practice through technical leadership and customer engagement.
- Mentoring engineers and helping develop future consulting capability within the company.
If you are an experienced Senior OT Security Consultant looking for a new opportunity to further develop your career, we would love to hear from you. Apply now to join our client's dynamic and talented team