Principal OT Security Consultant

About this role

One of the most exciting prospects in the UK cyber security sector today, Bridewell is a leading cyber security services company specialising in protecting and transforming critical business functions for some of the world’s most trusted organisations. We are the trusted partner for operators of essential services and provide end-to-end cyber security capabilities that help our clients overcome their security challenges, allowing them to operate safely and securely.
Bridewell holds the Gold level, Investors in People award which we feel solidifies and reflects on the outstanding calibre that makes us truly one team.
Due to Bridewell’s continued growth, we are looking for security focused individuals who bring deep expertise in OT cyber security across Critical National Infrastructure (CNI) sectors and have an honest and empathetic approach to customer conversations. You will have hands on experience in a client facing role, with substantial experience across a broad range of security topics, whilst creating and leading high performing teams. You will also be continually developing key senior relationships both internally and externally, ensuring high quality delivery, identifying new opportunities and shaping service-based solutions to enable revenue growth across your respective services areas.
Requirements
At the Principal level, you will be leading projects with Bridewell’s key clients, whilst leading a high performing team, managing a team of Senior Lead and Senior consultants. Alongside this, you will be an industry expert, with experience in delivering large scale transformational OT and cyber security projects, implementing compliance frameworks, and managing multiple long standing customer relationships. You will have a strong knowledge across OT cyber security disciplines and control frameworks, often acting as a point of escalation for your team and providing services directly into customers.

1. Technical Delivery (OT Cyber Security)

• Perform OT risk assessments, threat modelling, and vulnerability assessments.

• Assess and/or assure compliance with the NIS Regulations, NCSC CAF, NIST CSF, IEC 62443, ISO 27001, and sector-specific guidance.

• Develop security measures and designs to deliver security improvements

• Provide expert guidance on common OT cyber security challenges such as secure integration of IT/OT systems, cloud connected OT, remote access, protecting legacy systems, and emerging technologies).

• Develop and review system hardening standards, network segmentation designs, asset management solutions, and security monitoring approaches for OT environments.

2. Consulting & Delivery Excellence

• Responsible for the development, performance management and ongoing continual improvement for your team and associated service area.

• Lead OT cyber security engagements, ensuring they are adequately resourced, delivered on time and to budget, whilst meeting contractual requirements.

• Act as the senior point of contact for clients, managing expectations, risks, issues, and programme governance.

• Produce highquality written deliverables including strategies, assessments, architectures, and boardlevel briefings.

• Facilitate client workshops, executive presentations, technical reviews, and stakeholder engagement across engineering, operations, and cyber teams.

3. Commercial & Sales Support

• Support pre-sales engagements including scoping, estimating, proposal writing, and client presentations, from both an input and decision making perspective.

• Support business development by identifying new opportunities, nurturing client relationships, and producing sales proposals.

• Provide subject-matter expertise in sales meetings, bids, tenders, and industry events.

• Support the Associate Director and Chief Operating Officer on the shaping of strategy, services, client initiatives and internal company matters as and when required.

4. Leadership & Line Management

• Act as an advocate for the Bridewell values and foster a high performance, inclusive culture that values innovation, collaboration, and continuous improvement.

• Provide leadership and line management for a team of consultants, including mentoring, coaching, performance management, and career development support.

• Support the ongoing development of other Bridewell capabilities in areas such as OT security architecture, GRC, threat intelligence, or incident response.

• Oversee training pathways, success planning and technical competency development for consultants ranging from Senior Lead to Consultant level.

5. Strategic & Organisational Contribution

• Help shape Bridewell OT cyber security service offerings, methodologies, templates, and delivery frameworks.

• Contribute to industry thought leadership through whitepapers, webinars, conference presentations, and sector insights.

• Track and interpret OT threat landscapes, regulatory developments, and technology trends.

• Collaborate across technical, commercial, and managed services teams to strengthen integrated service propositions.

What we’re looking for

Technical Skills

• Deep knowledge of OT cyber security controls, architectures, and best practices.

• Skilled in ICS/SCADA protocol analysis (Modbus, DNP3, Profinet, OPC-UA, CIP).

• Experience of OT relevant frameworks such as IEC62443 and NCSC CAF – both assessment and program delivery.

• Strong understanding of OT system design, industrial networks, PLCs, HMIs, and safety systems and a familiarity with current security tooling for OT environments (asset discovery, anomaly detection, threat analytics).

Consulting & Communication

• Exceptional written and verbal communication, with experience presenting to senior executives, regulators, and technical teams.

• Ability to translate complex technical concepts into clear business language.

• Strong stakeholder management skills across engineering, operations, cyber security, and executive leadership.

• Working at all levels of an…