OT Security SME: PKI & HSM Expert for ICS

Gazelle Global Consulting Limited; Newcastle upon Tyne; Hybrid; GBP 92,000 - 166,000; Part time

Benefits offered by this job

Excellent Day Rate

Job summary

Gazelle Global Consulting Limited seeks an experienced OT Security SME to support a major UK power sector cybersecurity programme on a 12-month contract. Location: Shiremoor, hybrid 2-3 days on-site.

You will work with OT engineering, operations and cybersecurity teams on cryptographic protection, key management and secure communications across OT environments, including PKI integration, HSM implementation and CLM, with testing and deployment readiness.

Qualifications

• Strong OT/ICS understanding of SCADA/RTUs/IEDs/HMIs.
• Experience deploying HSM in control centres/substations.
• Knowledge of PKI, certificate management and cryptographic key management.
• Familiarity with DNP3, IEC 61850, Modbus, IEC 62351.
• Understanding of Purdue Model, OT segmentation, and DMZ design.
• Awareness of IEC 62443, NERC CIP and NCSC CAF.
• Experience supporting PoC testing and OT security integration.
• Understanding OT change control and maintenance windows.

Responsibilities

• Support a multi-phase programme including HSM, PKI and CLM.
• Assist deployment option assessments and testing.
• Ensure security solutions align with live OT environments.
• Collaborate with OT engineering, operations and cyber teams.

Skills

OT/ICS knowledge

HSM deployment

PKI architecture

Industrial protocols

OT network segmentation

IEC 62443 / NERC CAF

Proof-of-concept testing

OT change control

Job description

Gazelle Global Consulting Limited seeks an experienced OT Security SME to support a major UK power sector cybersecurity programme on a 12-month contract. Location: Shiremoor, hybrid 2-3 days on-site.

You will work with OT engineering, operations and cybersecurity teams on cryptographic protection, key management and secure communications across OT environments, including PKI integration, HSM implementation and CLM, with testing and deployment readiness.