Senior OT Cyber Security Engineer

We're Hiring: OT Cyber Security Engineer

Location: Stone, Staffordshire (Hybrid options available)

Company: Capula - part of the EDF Group

Capula is seeking a highly skilled Industrial Automation & Control Systems Cyber Security Engineer to join our Operational Technology team. You'll work on live and upcoming projects across critical infrastructure sectors including energy, water, renewables, and manufacturing-designing secure OT networks and leading advanced threat mitigation strategies.

What You'll Do:

• Design and secure OT networks across regulated industries
• Lead threat modelling, penetration testing, and red teaming in ICS environments
• Engineer security solutions aligned with NIST, ISO, IEC, and NIS-R standards
• Conduct vulnerability assessments and forensic investigations in OT/ICS environments
• Mentor junior engineers and support business development

What We're Looking For:

• 5+ years in cybersecurity, including 2+ years in ICS/SCADA environments (PLCs, RTUs, HMI systems)
• Strong understanding of ICS protocols: MODBUS, OPC, DNP3
• Experience securing cross-domain IT/OT interfaces and real-time systems
• Proven ability to design secure networks: switching, routing, firewalls
• Familiarity with MITRE ATT&CK for ICS, Bow-Tie Analysis, and adversary simulation
• Hands-on experience with tools like Nessus, Nmap, Metasploit, fuzzing tools
• Knowledge of compliance frameworks: NIST 800-53/800-82, ISO 27001, IEC 62443, HSE OG-86, NIS-R
• Experience with DFIR operations in industrial environments (e.g., VxWorks, Embedded Linux, WinCC, PCS 7)
• Strong stakeholder management and ability to build effective relationships across technical and non-technical teams
• Eligible for SC clearance

Why Capula?

• 28 days holiday + bank holidays
• Flexible working & private healthcare
• Pension, life assurance, and green travel schemes
• Inclusive culture that celebrates diversity
• Support for professional development and certifications

Apply with CV and cover letter quoting SS-2025-02 to Learn more at