Senior OT Security Engineer: ICS Resilience & Secure-by-Design

Digital Waffle; Newcastle upon Tyne; On-site; GBP 68,000 - 83,000; Full time

Benefits offered by this job

Bonus

Pension 10%

Job summary

Digital Waffle in the United Kingdom is seeking a Senior OT Security Engineer to strengthen security across critical infrastructure projects in the energy sector. You will advise project teams, design secure architectures, and lead security validation activities.

The role requires OT/ICS experience, CISSP or IEC 62443 credentials, knowledge of IEC 61850 and NIS2, plus strong communication to engage stakeholders.

Qualifications

• Certification such as CISSP or IEC 62443 credentials.
• Experience in OT environments or Industrial Control Systems (ICS).
• Knowledge of IEC 62443 and IEC 62351.
• Understanding of IEC 61850 and substation automation.
• Awareness of NIS2 and security level requirements.
• Knowledge of PRP and HSR networks.
• Experience with security technologies including firewalls, IDS/IPS, VPNs, encryption.
• Strong communication skills for technical and non-technical stakeholders.

Responsibilities

• Provide expert cybersecurity guidance to project teams, ensuring secure-by-design solutions.
• Design and implement robust security architectures for software and hardware components.
• Develop cybersecurity frameworks aligned with IEC 62443 and IEC 62351.
• Identify improvements to cybersecurity processes and operational efficiency.
• Produce FAT and SAT documentation and lead security validation activities.
• Mentor project teams with security guidance across the full lifecycle.
• Deliver internal security training sessions to raise awareness and capability.
• Track, assess and communicate security risks, issues and mitigations to stakeholders.
• Ensure adherence to corporate policies and handling of sensitive information.
• Promote a safety-first culture in security initiatives.

Skills

Cybersecurity certification

OT/ICS security

IEC 62443 knowledge

IEC 62351 knowledge

Communication skills

Security design principles

Education

OT/ICS security credential or degree

Tools

Firewalls

IDS/IPS

VPNs

Encryption protocols

Job description

Digital Waffle in the United Kingdom is seeking a Senior OT Security Engineer to strengthen security across critical infrastructure projects in the energy sector. You will advise project teams, design secure architectures, and lead security validation activities.

The role requires OT/ICS experience, CISSP or IEC 62443 credentials, knowledge of IEC 61850 and NIS2, plus strong communication to engage stakeholders.