OT Security Consultant

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

Job summary

83zero Ltd is seeking an experienced OT Security Consultant to join our cybersecurity practice in the United Kingdom on a hybrid basis. You will assess OT/ICS environments, perform risk reviews, and provide actionable remediation guidance to clients across energy, manufacturing, oil & gas, and pharmaceutical sectors.

You will work as a trusted security advisor, conducting assessments, gap analyses and roadmap development while collaborating with clients and maintaining UK clearance requirements.

Qualifications

• Experience in OT/ICS security including SCADA or ICS environments.
• Knowledge of OT network security, risk assessments and security controls.
• Experience in a consultancy or client-facing role is desirable.

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, policies and roadmaps.
• Provide practical security recommendations and technical guidance.
• Work closely with clients as a trusted security advisor.

Skills

OT/ICS security

SCADA security

IEC 62443

Consulting experience

Communication skills

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).