Senior OT Cyber Security Analyst

Summary

We are looking for a dynamic, hands‑on senior analyst who will be responsible for monitoring cyber risk and facilitating the remediation of identified vulnerabilities for IT and OT systems across Lightsource bp. The ideal candidate will have extensive experience in cybersecurity, a strong understanding of threat landscapes, and the ability to mentor junior analysts. This role will leverage global resources and tools to develop business cyber maturity, with a strong focus on the Microsoft security stack.

• OT & IT Security Monitoring :
  Continuously monitor the security of both OT and IT environments, including understanding of SCADA systems, Industrial Control System (ICS), and supporting infrastructure for potential threats, anomalies, and signs of compromise.
• Threat Hunting & Incident Response :
  Utilise tools such as Azure Sentinel, Defender XDR, Defender IoT, Cisco Secure Access, Purview, and Tenable to proactively hunt for security threats across IT and OT networks, leveraging threat intelligence relevant to the organisation.
• Vulnerability Management & Patching :
  Identify and assess vulnerabilities within SCADA, ICs, and OT devices, ensuring timely remediation in collaboration with Infrastructure, Digital Workplace, and Support teams.
• Regulatory Compliance & Audit Support :
  Ensure compliance with NIST 800‑82, IEC 62443, OG86, NERC‑CIP, SOCI, NIST‑CSF, NIS2 and other relevant regulations. Assist in cyber security audits and risk assessments for OT environments.
• Security Policy & Governance :
  Support the development and enforcement of OT security policies, standards, and procedures, ensuring alignment with industry frameworks and best practices.
• Stakeholder Communication :
  Work closely with Cyber Security Managers, OT Engineers, and Business Leaders to communicate risks, provide updates during security investigations, and drive awareness of OT‑specific threats.
• Incident Investigation & Documentation :
  Ensure all security incidents within the OT environment are fully investigated, documented, and addressed, improving incident response capabilities.
• Security Hardening & Best Practices :
  Assist in securing industrial networks, remote access solutions, and third‑party integrations by applying industry best practices, including network segmentation, zero‑trust principles, and access controls.
• Define and Measure Excellence :
  Establish clear security performance metrics and targets that align with the expectations of customers, internal asset management teams, and O& M teams. Ensure security best practices are embedded within OT operations.
• Enhance OT & SCADA Security Awareness :
  Raise the profile of OT Security and SCADA Security both internally and externally. Work closely with Marketing, communications, and security awareness teams to promote a security‑first culture.

• SIEM – Azure Sentinel, Defender for IoT, Defender XDR, Defender for Cloud, Defender for Cloud Apps, Defender EASM, Copilot for Security
• Vulnerability Management – Defender XDR, Tenable IO / Nessus, Defender EASM
• EDR – Defender for Endpoint
• Data Governance – Purview
• IDAM - Entra
• Device Management - working understanding of Intune including MDM / MAM
• Networking / Firewalls – exposure to Fortinet, Cisco Fire Power and Cisco Meraki desirable
• Knowledge of NIST 2.0 Cyber Security Framework required
• Knowledge of IEC 62443 OT standard required
• Good understanding of ISO
  27001 and Cyber Essentials Plus requirements required
• ITIL Knowledge - Good understanding of ITIL principles and their application required
• Knowledge of NERC CIP and / or SOCI standards desirable

• Bachelor’s degree in Computer Science, Information Security, or a related field.
• Azure Security Engineer (AZ-500), Certified Cyber Professional (CCP), Certified Information Systems Security Professional (CISSP), CompTIA Security+, GCIA, GCIH

• Extensive experience in managing and utilizing Azure Sentinel, Defender for IoT, Defender XDR, Defender for Cloud Apps and Defender for Cloud / EASM
• At least five years’ experience in security incident handling and security incident response
• Demonstratable experience of working in a Microsoft focused cloud…