OT Cyber Security - Senior Manager

Location: London (Hybrid – typically 1 day per week in the London office, with occasional client-site travel)

Join a leading global consultancy delivering complex cyber security solutions across critical national infrastructure, defence and industrial sectors. Working within an established Operational Technology (OT) Security practice, you'll help organisations protect critical systems, strengthen cyber resilience and address evolving threats to industrial environments.

We're looking for an experienced OT Cyber Security Senior Manager to lead complex security programmes, manage senior client relationships and shape the delivery of OT security solutions across regulated environments.

You’ll work with organisations across energy, utilities, manufacturing, aerospace and defence, tackling challenging security issues within Industrial Control Systems (ICS) and critical infrastructure. Alongside leading client engagements, you’ll play a key role in developing technical capability, mentoring consultants and driving the growth of the OT security practice.

• Lead end-to-end OT cyber security programmes, managing delivery, budgets, timelines and security standards.
• Build strong relationships with senior stakeholders, translating complex technical risks into clear business impacts.
• Assess IC s environments, including SCADA, DCS, PLC and IIoT systems, identifying vulnerabilities and recommending improvements.
• Develop and implement OT security strategies, control frameworks and risk mitigation plans.
• Deliver security assessments, discovery workshops and compliance reviews aligned with industry standards and regulatory requirements.
• Produce threat and risk assessments, security policies, assurance plans and compliance documentation.
• Mentor and develop team members, supporting technical capability and career progression.
• Identify business development opportunities, strengthen client relationships and contribute to the growth of the OT security practice.

• 10+ years' experience in OT/ICS cyber security or critical infrastructure security.
• Proven experience leading complex cyber security programmes within regulated industrial environments.
• Strong technical knowledge of IC s environments, including SCADA, DCS, PLC and IIoT.
• Familiarity with OT security regulations and frameworks, including NIS/NIS2, CAF and CRA.
• Experience engaging with both technical teams and senior business stakeholders.
• Ability to communicate complex security risks and develop proportionate, commercially viable solutions.
• Willingness to travel across the UK as client engagements require.
• Certifications such as GICSP, IEC 62443, CISSP or GRID.
• Experience across energy, utilities, manufacturing, aerospace, defence or other critical national infrastructure sectors.
• Knowledge of NERC-CIP and ISA/IEC 62443 standards.
• A background combining cyber security advisory with hands-on technical implementation.

Security requirements: Any offer is subject to successful BPSS and Security Check (SC) clearance. Applicants must have five years of continuous UK address history, typically with no periods of 30 consecutive days or more spent outside the UK, at the point of application. Additional client-specific requirements may apply.

Flexibility and UK travel are required to support client delivery.