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Senior Vendor Security Analyst

National Energy System Operator | wokingham, United-Kingdom | Posted June 29, 2026

Position Overview

About the Role

National Energy System Operator is looking for a skilled and ambitious individual to join our Security Team in a Senior Vendor Security Analyst role. The Senior Analyst will support the Vendor Security Manager in overseeing NESO’s vendor lifecycle, governing and developing NESO’s procured vendor tooling, and ensuring the completion of all vendor assurance activity. This role may be based from our offices in Wokingham or Warwick, and we offer hybrid working arrangements that blend office and home working.

This role is designated as requiring a National Security Vetting (NSV) clearance. The level of clearance associated with the role will usually need you to have been a resident in the UK for the last five years to apply for the required level of clearance. Applicants who do not currently meet this residency requirement are encouraged to express an interest in the role.

Key Accountabilities

  • Lead and quality‑assure inherent ri...

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