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Senior secret cleared penetration tester (10+ years) to identify vulnerabilities, assess risks [...]

London
S.i. Systems
Penetration tester
Posted: 1 September
Offer description

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Senior Secret Cleared Penetration Tester (10+ years) to identify vulnerabilities, assess risks and the overall security posture of systems, London

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Client:

S.i. Systems


Location:

London, United Kingdom


Job Category:

Other

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EU work permit required:

Yes

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Job Reference:

a0a54183cafe


Job Views:

10


Posted:

25.08.2025


Expiry Date:

09.10.2025

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Job Description:

Our Valued Public Sector client is seeking a Senior Secret Cleared Penetration Tester (10+ years) to identify vulnerabilities, assess risks, and evaluate the overall security posture of systems.

Overview:

The contractor will assist the clients project team in evaluating the security posture of systems and supporting operations. As the specific systems to include in the penetration test are still being finalized, the contractor will collaborate with the team to define the scope and provide recommendations on the most critical systems and components to test. The goal is to identify vulnerabilities, assess risks, and ensure the security of systems handling sensitive data.

Must Haves:

* 5+ years experience with simulation attacks, network vulnerability exploitation, and data exfiltration
* 5+ years with Network, Wireless, and Cloud Infrastructure testing

Deliverables include but are not limited to:

* Executive summary of findings and their business impact.
* A detailed list of vulnerabilities discovered, with proof of concept for any successfully exploited weaknesses.
* Risk ratings and prioritized recommendations for mitigation.
* Proof of Concept (PoC): Demonstration of any identified vulnerabilities with exploit examples, where applicable.
* Risk Mitigation Plan: Clear, actionable recommendations for remediating vulnerabilities and improving security posture.


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