Gazelle Global
OT SME/Expert
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OT Security SME
We're seeking an experienced OT Security SME to support a major cybersecurity programme within the UK power sector.
This 12-month contract offers the opportunity to work on critical infrastructure security, focusing on cryptographic protection, key management and secure communications across operational technology environments.
You'll contribute to a multi-phase programme covering Hardware Security Module (HSM) implementation, Public Key Infrastructure (PKI) integration and Certificate Lifecycle Management (CLM). Working alongside OT engineering, operations and cybersecurity teams, you'll help assess deployment options, support testing and ensure security solutions are suitable for live operational environments.
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Key Skills and Experience
- Strong understanding of OT/ICS environments, including SCADA, RTUs, IEDs and HMIs.
- Knowledge of HSM deployment within control centres and substations.
- Experience or understanding of PKI architecture, certificate management and cryptographic key management.
- Familiarity with industrial protocols such as DNP3, IEC 61850, Modbus and IEC 62351.
- Understanding of OT network segmentation, DMZ design and the Purdue Model.
- Awareness of IEC 62443, NERC CIP and NCSC CAF requirements.
- Experience supporting proof-of-concept testing, failover validation and OT security integration.
- Understanding of OT change control, maintenance windows and operational safety requirements.
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Location
Shiremoor, UK | Hybrid, 2-3 days per week on-site.
Compensation
Excellent Day Rate Available.
For more information or to apply directly, please email. I review applications daily and will contact shortlisted candidates as quickly as possible.
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