OT Cyber Security Director & Senior Manager Big4

Tandemsearch; London; On-site; GBP 80,000 - 120,000; Full time

Job summary

A leading company in the Energy & Utilities sector is seeking Senior Manager and Director-level professionals for Cyber Operational Technology roles in London. The position involves providing technical expertise in designing secure industrial control systems and leading engagements, offering a unique opportunity for experienced candidates to contribute to the security of operational technology. Candidates should have a robust understanding of network fundamentals and hands-on experience with relevant technologies.

Qualifications

• Deep understanding of network fundamentals and security design.
• Hands-on experience with SCADA, DCS, PLC, EMS.
• Familiarity with security standards such as NIST CSF and ISO27001.

Responsibilities

• Build and maintain client relationships for OT ICS Security opportunities.
• Coach and develop team members, fostering a culture of learning.
• Lead complex OT security engagements ensuring technical excellence.

Skills

Network fundamentals

Security design for industrial automation

Develop pragmatic solutions to cyber risks

Job description

We’re Hiring – OT Cyber Security Roles in London!

I’m currently hiring forSenior Manager and Director-levelroles inCyber Operational Technology (OT)security, based inLondon, UK, withbusiness travel to the Middle East.

Job Type:Full-Time, Permanent
Location:London, UK (with travel to the Middle East)
Sector:Energy & Utilities
Experience Level:Senior Manager / Director

Role Overview
This role is pivotal to the growth of our Cyber Security Services, providing technical and advisory expertise to help clients securely design and deploy industrial control systems and operational technology.

Key Responsibilities:

• Build and maintain client relationships and support business development for OT ICS Security opportunities
• Collaborate across cyber and technology teams to bring innovation to clients
• Coach and develop team members, fostering a culture of learning and growth
• Lead delivery of complex OT (ICS, SCADA, IIOT) security engagements, ensuring technical excellence and strong team performance
• Act as a Subject Matter Expert in OT security, advising on design and implementation of industrial control system security solutions
• Stay ahead of emerging trends and translate client needs into new security requirements

Experience Required:

• Deep understanding of network fundamentals and security design for industrial automation
• Hands-on experience with SCADA, DCS, PLC, EMS, and related technologies
• Familiarity with protocols like TCP/IP, Modbus, IEC 61850, OPC UA, PROFINET
• Knowledge of security standards such as NIST CSF, ISO27001, IEC 62443, and NIS regulations
• Ability to develop pragmatic solutions to address cyber risks in OT environments