Principal OT Security Consultant

Bridewell; Greater London; On-site; GBP 120,000 - 160,000; Full time

Benefits offered by this job

Holiday 25 days

Flexible working

Profit share

Company pension

Private healthcare

Life assurance

Job summary

Bridewell is seeking a Principal OT Cyber Security leader to drive consultancy engagements across Critical National Infrastructure, delivering secure, scalable solutions. You will lead multi-disciplinary teams, shape strategies, and build senior client relationships to enable revenue growth.

You will oversee risk assessments, compliance mappings and security designs while mentoring consultants and contributing to Bridewell's OT security offerings and thought leadership.

Qualifications

• Experience delivering large-scale OT cybersecurity projects.
• Able to lead senior consultants and manage client relationships.
• Experience with OT risk assessments, threat modelling and vulnerability assessments.

Responsibilities

• Lead OT cyber security engagements and ensure on-time delivery.
• Provide expert guidance on IT/OT integration challenges.
• Develop security strategies, architectures and reviews.
• Mentor and manage a team of consultants.
• Support pre-sales and client opportunities.

Skills

OT cyber security

IC/SCADA protocols

IEC 62443

Leadership & mentoring

Stakeholder management

Education

Degree in Engineering or Computer Science

Job description

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 andprovideend-to-end cyber security capabilities that help our clients overcome their security challenges, allowing them tooperatesafely and securely.

Bridewell holds theGoldlevel, 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 whobring deepexpertiseinOT 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 facingrole, with substantial experienceacross a broad range of security topics, whilstcreating andleadinghigh performingteams.You will also be continually developing key senior relationshipsboth internally and externally, ensuring high quality delivery,identifyingnewopportunitiesand shapingservice-basedsolutions 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 SeniorLeadand Senior consultants. Alongside this,you will be an industry expert, with experience in deliveringlarge scaletransformationalOT and cyber securityprojects, 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. TechnicalDelivery(OT Cyber Security)

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

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

• Develop security measures and designs to deliver security improvements

• Provideexpert guidance oncommon OT cyber security challenges such assecure integration of IT/OT systems,cloudconnectedOT, 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.

• Producehighqualitywritten deliverables including strategies, assessments,architectures, andboardlevelbriefings.

• Facilitateclientworkshops, executive presentations, technical reviews, and stakeholder engagement across engineering, operations, and cyber teams.

3. Commercial & Sales Support

• Supportpre-sales engagements including scoping, estimating, proposal writing, and client presentations, from both an input anddecision makingperspective.

• Support business development byidentifyingnew opportunities, nurturing client relationships, andproducing sales proposals.

• Provide subject-matterexpertisein sales meetings, bids, tenders, and industry events.

• Support theAssociate Director and Chief OperatingOfficeron theshaping ofstrategy, services, clientinitiativesand internal company matters as and whenrequired.

4. Leadership & Line Management

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

• Provide leadership and line management fora team of consultants,includingmentoring, coaching, performance management, and career development support.

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

• Oversee training pathways,success planningand technical competency development forconsultants ranging from Senior Lead to Consultant level.

5. Strategic & Organisational Contribution

• Help shapeBridewellOT 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.
  

Whatwe’relooking for

Technical Skills

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

• Skilled in IC S/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 systemsand a familiarity withcurrentsecurity 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.

• Workingat 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 requireexpertise, stakeholdermanagementand 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 recordin helping grow accounts or developing long-term client relationships.

Leadership

• Proven experience leadinglargeteams of consultants or engineers in complex project environments.

• Ability tocreate,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 andproblem solvingskills.

• 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?

• Competitive Salary

• 25 Days Holiday - Plus buy and sell options

• Flexible Working (around core office hours)

• Profit Share Scheme

• Company Pension

• Employee Shareholder Scheme

• Access to a Training Budget

• Life Assurance

• Cycle to Work Scheme

• Electric Vehicle Scheme

• Private Healthcare (incl. Gym discounts)

• Vision Care

• Birthday off (After 1 year)

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.

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.