We are seeking a highly skilled and experienced OT Senior Cyber Security Analyst to join our Security Operations team at Thames Water, the UK’s largest water company. This role involves maintaining SecOps solutions, controls, and processes, mentoring the SOC team, and managing OT alerts and incidents.
The ideal candidate will have a deep understanding of SecOps, IT, and OT environments, with responsibilities including incident management, threat detection, and security improvement. Strong communication skills are essential for collaboration with cross-functional teams.
Key Responsibilities
1. Contextualise OT Specific Threats: Understand OT estate, threats, and controls; analyze network traffic with tools like Claroty; build relationships with Operations teams.
2. Maintain Security Operations: Improve security processes; support tools like Microsoft Sentinel, SOAR, EDR/XDR, and PAM; reduce alert fatigue and improve incident resolution times.
3. Proactive Risk Remediation: Identify and evaluate risks; perform threat hunting; demonstrate risk reduction metrics.
4. Incident Readiness & Response: Lead incident triage and response; reduce business impact; educate staff on incident procedures.
5. Continuous Improvement: Drive process automation and efficiency; track improvements via KPIs and dashboards.
Key Relationships
CISO, Operational Technology Teams, IT Operations, Security Operations Manager, Security Architecture Manager, Cyber Security Programme Manager, Cyber Resilience Manager, Network Operations Manager, Business Change and Engagement, Key Business Stakeholders, Service Owners.
Candidate Requirements
Essential Experience
* Minimum 3 years in Cyber Security controls, preferably in critical infrastructure.
* Minimum 3 years working with control systems like ICS, SCADA, CNI.
* Experience in SOC environment, incident triage, and cyber risk remediation.
Technical Skills & Qualifications
* Ability to communicate complex issues to non-technical audiences.
* Understanding of OT infrastructure and networking.
* Proficiency in Kusto Query Language (KQL) and SIEM systems, especially Microsoft Sentinel.
Desirable Experience & Skills
* Knowledge of network security tools like NAC, Firewalls, IDS/IPS.
* Leadership experience; cybersecurity or related degree; certifications like Microsoft Security Operations Analyst (SC-200, AZ-900), CCSP, OT-specific certifications.
Benefits
* Salary up to £65,000 depending on experience.
* 26 days annual leave, increasing with service, plus bank holidays.
* Generous pension scheme, health and wellbeing benefits, and more.
About Thames Water
The UK’s largest water and wastewater company, serving over 16 million customers. We aim to build a sustainable future, supporting our communities and environment. We offer diverse career opportunities, flexible working, and inclusive culture.
Join us to make a difference in people's lives and help protect water resources for future generations. We value diversity and are committed to supporting all applicants throughout the recruitment process.
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