OT Security Engineer at Hays, Cardiff, £600-£700 per day

OT Security Engineer - Based in South Wales, Hybrid Working, Paying between £600 to £700 Per Day, Outside IR35, 12 Month Contract, To Start ASAP


Your new company

You will be working with a leading organisation that is based in South Wales.

Your new role

We're looking for a hands‑on OT Security Engineer to play a key role in strengthening and evolving operational technology security across complex, business‑critical environments.

This contract focuses on designing, implementing and maturing OT security tooling, initially leading the deployment of EDR, ITDR, NDR and ICS monitoring solutions into OT networks, alongside the rollout of hardened security baselines. You'll work closely with SOC, security architecture and incident response teams to integrate solutions into a centralised SIEM/SOC capability and fine-tune detection and response.

This is a highly technical, electrofocusing role offering real ownership, autonomy and impact.

Key Responsibilities

• Lead the implementation, configuration and optimisation of OT security technologies (EDR, ITDR, NDR, ICS monitoring)
• Integrate OT security tooling with a central SOC/SIEM environment (including alerting, detection and response tuning)
• Take a threat led approach to security configuration, aligned to MITRE ATT&CK, Cyber Kill Chain and relevant threat intelligence
• Roll out endpoint and ICS monitoring agents across OT environments, including remote and critical locations, working closely with operational teams to minimise disruption.
• Establish operating models, alerting processes and clear RACI ownership for OT security platforms
• Support incident response activities and continuous improvement of detection capability
• Work with vendors, security teams and OT stakeholders to maximise value and platform performance
• Produce clear management information and security insights from deployed technologies
  
  
  

What you'll need to succeed

• Strong background in security engineering or security operations, ideally within OT or regulated environments
• Hands on experience with areas such as EDR, NDR, XDR, SIEM, endpoint security, network security or ICS monitoring
• Good understanding of threat models, adversary tactics and defensive frameworks
• Experience integrating security tooling into SOC environments (e.g. SIEM/XDR platforms)
• Comfortable working independently while engaging confidently with technical and non‑technical stakeholders
• Exposure to OT environments and standards (e.g. NIS, NIS‑CAF) is highly desirable

What you need to do now


If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.

If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.

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