Senior Penetration Tester – Contract in Essex

We are looking for an experienced Senior Penetration Tester to support a cybersecurity engagement involving automated security testing and validation.

Location: hybrid/remote location is Essex areas

Engagement: Contract (Inside IR35)

Start: Immediate / Short Notice Preferred

The role requires a hands-on security professional who can go beyond automated tooling — validating vulnerabilities, understanding attack paths, assessing real-world risk and providing clear remediation guidance.

Key Responsibilities

• Validate and investigate penetration testing findings generated through automated security testing platforms.
• Distinguish genuine vulnerabilities from false positives, edge cases and low-risk findings.
• Reproduce and demonstrate vulnerabilities where required.
• Analyse attack paths and potential exploitation scenarios.
• Assess the business and technical impact of identified vulnerabilities.
• Prioritise remediation based on risk and exploitability.
• Recommend appropriate remediation and compensating controls.
• Work with technical and security teams to explain findings clearly.
• Provide high-quality technical documentation and reports.
• Apply manual penetration testing expertise to complement automated testing.
• Strong commercial experience in penetration testing / offensive security.
• Proven ability to manually validate automated security findings.
• Strong understanding of vulnerability assessment, exploitation and attack paths.
• Experience identifying false positives and assessing vulnerabilities in context.
• Ability to communicate technical security findings to both technical and non-technical stakeholders.
• Strong knowledge of common attack techniques, vulnerabilities and security controls.

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