Head of OT & ICS Security Testing
We are seeking an experienced Head of OT & ICS Security Testing to lead the strategy, governance and delivery of security testing across operational technology (OT), industrial control systems (ICS) and critical infrastructure environments. This senior role will provide technical leadership for penetration testing, vulnerability assessments, red team exercises, threat-led testing and security validation activities across complex, safety-sensitive environments. You will establish a robust testing framework that reflects relevant industry standards, regulatory expectations and the unique operational requirements of industrial systems.
You will define and maintain the OT and ICS security testing roadmap, prioritising activity according to business risk, threat intelligence, system criticality and operational constraints. Responsibilities will include leading internal and external testing teams, overseeing testing scopes and methodologies, reviewing findings, and ensuring that remediation plans are practical, risk-based and properly tracked. You will work closely with engineering, operations, architecture, cyber defence, risk and compliance stakeholders, while engaging with system owners and third-party suppliers to coordinate testing without disrupting essential services. The role will also involve developing reporting for senior leadership, contributing to incident readiness and validating the effectiveness of security controls through realistic exercises.
The successful candidate will have substantial experience leading security testing within OT, ICS, industrial automation, manufacturing, energy, utilities, transport or similarly complex environments. You will have strong knowledge of protocols, technologies and architectures such as SCADA, DCS, PLCs, RTUs, historians, engineering workstations and industrial networks, together with a clear understanding of the differences between IT and OT risk. Experience with recognised frameworks and standards, such as IEC 62443, NIST SP 800-82, MITRE ATT&CK for ICS and relevant regulatory requirements, is highly desirable. Professional certifications in penetration testing, industrial cybersecurity or information security are beneficial. You will be an influential communicator, confident working with technical and non-technical stakeholders, and capable of balancing rigorous security assurance with safety, availability and operational continuity.
Head of OT & ICS Security Testing
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