OT Security Consultant

83zero Ltd; Manchester; Hybrid; GBP 90,000 - 110,000; Full time

Job summary

83zero Ltd is seeking an experienced OT Security Consultant to join our cybersecurity consultancy, supporting clients in energy, manufacturing, oil & gas and pharmaceuticals. You will lead OT security assessments, identify risks and help shape improvement roadmaps for operational environments.

Hybrid role requiring 2–3 days on site per week. You must hold active SC clearance and be a sole UK national. Strong communication skills to explain technical risks clearly are essential.

Qualifications

• Experience in OT/ICS security, ideally including SCADA or industrial control systems.
• Strong OT network security, risk assessments and security controls.
• Experience in consultancy or client-facing environments.
• Knowledge of IEC 62443, NIST or similar frameworks.
• Good communication and ability to explain technical risks clearly.

Responsibilities

• Deliver OT security assessments, audits and gap analyses.
• Assess OT networks, systems and security controls to identify risks.
• Support clients with OT security strategies and improvement roadmaps.
• Provide practical security recommendations and technical guidance.
• Work closely with clients as a trusted security advisor.

Skills

OT/ICS security

SCADA ICS

Consultancy experience

Frameworks knowledge

Job description

OT Security Consultant Up to 100,000 Hybrid

I'm looking to speak with experienced OT Security Consultants for an opportunity within an established cybersecurity consultancy, supporting clients across industries such as energy, manufacturing, oil & gas and pharmaceuticals.

You'll be working on a range of OT security projects, helping organisations identify risks, strengthen their security posture and protect critical operational environments.

What you'll be doing

• Delivering OT security assessments, audits and gap analyses.

• Assessing OT networks, systems and security controls to identify potential risks.

• Supporting clients with OT security strategies, policies and improvement roadmaps.

• Providing practical security recommendations and technical guidance.

• Working closely with clients as a trusted security advisor.

What we're looking for

• Previous experience in OT/ICS security, ideally including SCADA or industrial control systems.

• Strong understanding of OT network security, risk assessments and security controls.

• Experience working in a consultancy or client-facing environment.

• Knowledge of IEC 62443, NIST or similar security frameworks would be beneficial.

• Good communication skills and the ability to explain technical risks clearly.

Salary: Up to 100,000

Location: Hybrid, 2-3 days onsite per week.

Security requirements: Must hold active SC clearance and be a sole UK national (no dual nationality).