Security Penetration Tester

Company: Thames Water

Location:

Posted: April 27th, 2026

As a Security Penetration Tester, you will be responsible for supporting the design, implementation, and maintenance of TVM (Threat & Vulnerability Management) solutions, controls and processes across the organisation. You will be liaising with Digital teams to ensure appropriate mitigation and remediation of vulnerabilities detected across our IT estate.

This role requires an understanding of TVM concepts, technologies, and best practices, as well as the ability to collaborate effectively with cross-functional teams. The ideal candidate will possess strong communication and will be committed to ensuring the highest level of security, compliance, and user experience.

Security Clearance: CTC (Counter Terrorist Check) clearance is essential. You must currently hold or be able to attain CTC clearance for this role.

What you’ll be doing as a Security Penetration Tester

Base location – Hybrid – Clearwater Court Reading.

Working pattern – 36 hours Monday to Friday.

What you should bring to the role

What’s in it for you?

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