Penetration Tester in London

PENETRATION TESTER REMOTE (OCCASIONAL TRAVEL TO OFFICE IN BATTERSEA)OUTSIDE IR35 £500 TO £550 PER DAY DECEMBER STARTThis is an opportunity to join a growing in-house cyber security function that is continuing to expand its penetration testing capability across multiple business units. You'll take ownership of end-to-end testing engagements, working independently while helping shape the future direction of a mature and evolving security programme.The CompanyThey are a large international organisation with a diverse portfolio of consumer-focused businesses operating across multiple regions. Over recent years, they have invested significantly in building internal cyber security capabilities, creating a consultancy-style function that supports a broad range of technology environments. Their security team works closely with stakeholders across Europe and Asia, delivering high-quality testing and security assurance services.The Role and Deliverables

• Lead and deliver end-to-end infrastructure and network penetration testing engagements.
• Perform in-depth assessments of enterprise network architectures and identify security weaknesses beyond standard vulnerability scanning.
• Conduct security testing across network boundaries and complex infrastructure environments.
• Engage directly with stakeholders to scope testing activities and communicate findings.
• Produce clear technical reports and present remediation recommendations to both technical and non-technical audiences.
• Contribute to the ongoing development and maturity of the internal security testing capability.

Your Skills & Experience

• Strong experience delivering infrastructure and network penetration testing engagements.
• Proven capability in assessing complex network architectures and identifying exploitable weaknesses.
• Experience managing the full penetration testing lifecycle independently, from scoping through to reporting.
• Ability to communicate technical findings and recommendations clearly to a range of stakeholders.
• Strong client-facing and report-writing skills.
• Experience working across large, complex environments with multiple stakeholders.
• Exposure to Operational Technology (OT) security testing would be advantageous.
• Experience within telecommunications, retail, critical infrastructure, or similarly complex environments would be beneficial.
• Comfortable collaborating with international teams across different regions and time zones.

How to ApplyIf you have strong infrastructure and network penetration testing experience and are looking for a contract opportunity where you can take ownership of testing engagements while contributing to a growing security function, apply today.