Senior Vendor Security Analyst

Role Overview

Senior Vendor Security Analyst – National Energy System Operator (NESO).

Location: Wokingham or Warwick offices, hybrid working arrangements available.

The role requires National Security Vetting (NSV) clearance. Applicants must have lived in the UK for the last five years to qualify for clearance. This position supports the Vendor Security Manager and oversees NESO’s vendor lifecycle, tooling, and assurance activities within the Vendor Security Management (VSM) function.

Key Accountabilities

• Lead and quality‑assure inherent risk assessments, ensuring consistency and accuracy across the team.
• Oversee junior analysts in onboarding and triaging new vendors, including profiling and tiering via NESO’s vendor platform.
• Manage issuance and validation of assurance questionnaires, ensuring timely vendor engagement and follow‑up.
• Act as point of escalation for junior team members on vendor risk assessment...