Senior OT Cyber Engineer

Senior OT Cyber Security
Enigneer | Operational Technology | SCADA | PLC | HMI | EC&I | Critical Infrastructure | OT Security | £75,000 - 2 days a week onsite

We are looking for a Senior OT Cyber Security Engineer to join a growing cybersecurity team focused on securing Operational Technology (OT) and Industrial Control Systems (ICS) environments.

This is a high-impact role where you'll work on protecting critical infrastructure, designing secure OT architectures, and leading security engagements across complex industrial environments blending your skills in Industrial Controls & OT Security.

• Lead OT/ICS security assessments across industrial environments
• Design and implement secure network architectures for OT systems
• Conduct risk assessments, threat modelling, and vulnerability analysis
• Support incident response and remediation within OT environments
• Work closely with clients to define and improve their OT security posture
• Contribute to best practices, standards, and security frameworks

• Strong experience in OT / ICS cybersecurity environments
• Solid understanding of industrial protocols (e.g. Modbus, DNP3, OPC)
• Strong Industrial controls experience - SCADA, PLC, HMI
• Experience with network security (firewalls, segmentation, monitoring)
• Familiarity with frameworks such as IEC 62443, NIST, or NCSC guidance
• Ability to work directly with clients and communicate technical concepts clearly
• Background in critical infrastructure, energy, manufacturing, or similar sectors

You’ll play a key role in securing critical infrastructure, working on meaningful projects with real-world impact; all within a flexible, fully remote environment.