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