Principal OT Security Consultant
Bridewell
Principal OT Security Consultant
Bridewell
CNI-focused cyber security consulting
Bridewell · London, United Kingdom (Hybrid) · Full-time · Posted 2026-09-01
Workplace: hybrid
Department: Operational Technology
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.
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 organisation and managing stakeholders effectively.
Commercial & Sales
Developing services and solutions to drive revenue growth.
Operating as an escalation on complex matters that require expertise, stakeholder management and strong customer relationships to deliver successful outcomes.
Ability to produce costed sales proposals.
Ability to scope engagements accurately and balance effort, risk, and cost.
Track record in helping grow accounts or developing long-term client relationships.
Leadership
Proven experience leading large teams of consultants or engineers in complex project environments.
Ability to create, inspire, coach, and develop high-performing teams.
Qualifications & Certifications (Desirable)
Degree in Engineering, Cyber Security, Computer Science, or related field.
GICSP, GRID, CISSP, CISM, ISA/IEC 62443 certificates.
Prince2, Agile, or similar delivery qualifications.
Personal Attributes
Strategic thinker with strong analytical and problem solving skills.
Highly organised with the ability to handle multiple complex projects simultaneously.
Proactive, resilient, and comfortable in fast-paced environments.
Strong influencer able to drive change across complex technical and operational teams.
What’s in it for you?
Our vision is to create a safe, inclusive digital world where people and organisations can thrive. Our values of Do the Right Thing, One Team and Above and Beyond emphasises the importance of the part we play in society, and our commitment to our people and clients. Our story to-date has been phenomenal, but success doesn’t end here and as we continue to grow and scale, we want to keep the same culture, passion and commitment to high quality that has enabled us to get this far. Bridewell will provide a great career opportunity with continual development as well as the following:
About Bridewell
One of the most exciting prospects in the UK Cyber Security sector today, Bridewell is one of the fastest growing Cyber Security services businesses with a strong track record for delivering complex security projects and providing excellent customer service. Bridewell has an exciting and varied portfolio of clients across Financial Services, Manufacturing, Oil & Gas, Government, Critical National Infrastructure and more. 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.
Along with our focus on our people, we also have a big focus on sustainability and recognise the role we play in the fight against climate change. Today, Bridewell is proud to be a carbon negative business.
Location: Bridewell operates a hybrid and flexible working policy, however you will be required to travel to different sites on occasion.
Note: To be eligible for this job you must either hold SC or be eligible and willing to go through security clearance.
Bridewell values diversity in the workplace and is a fair and equal opportunity employer. We are committed to creating an equal and inclusive working environment, with the aim that our employees will be truly representative of all sections of society and each person feels respected and able to give their best.
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Bridewell provides cyber security services to organisations in Critical National Infrastructure and other highly regulated sectors. It offers cyber consulting and managed security services, with a focus on implementing practical security controls and monitoring to protect operations. As a long-standing Microsoft partner, Bridewell specializes in maximizing the effectiveness of Microsoft Security technology—such as Defender and Cloud security tools—to deliver targeted, policy-driven security solutions. The company differentiates itself through deep knowledge of CNI challenges, accredited industry credentials, and a collaborative approach that keeps clients in partnership to choose, deploy, and operate the right security measures. The goal is to help clients defend against threats and continue operating safely and securely by continually improving their security posture.
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