Senior Penetration (PEN) Tester

Senior Penetration Tester (PEN Tester)

Remote-first (Around 2 days per month in Warwick)

£60,000 - £70,000

Ready to take your cybersecurity expertise to the next level? Our client is seeking a skilled Senior Penetration Tester to lead complex security assessments across critical systems. This is a fantastic opportunity to play a key role in strengthening organisational resilience against evolving cyber threats while continuing to develop your own technical capability.

Key Responsibilities:

• Plan & Execute: Lead complex PEN testing engagements, selecting methodologies aligned to system design and business impact.
• Identify & Exploit: Uncover and validate vulnerabilities, demonstrating realistic attack paths.
• Custom Research: Develop tailored testing approaches for proprietary or sensitive environments beyond standard tooling.
• Collaborate & Remediate: Partner with IT, Engineering, and OT/ICS teams to support effective vulnerability remediation.
• Mentor & Develop: Support and guide junior testers, helping to grow overall team capability.

What We're Looking For:

• Strong experience delivering penetration testing in complex, high-risk environments
• Solid technical expertise across Linux, Windows, and Active Directory
• Proficiency in scripting (e.g. Bash, Python)
• Knowledge of cloud and container security (AWS, Azure, Kubernetes)
• Excellent communication skills, with the ability to explain risks to both technical and non-technical stakeholders
• Relevant certifications such as CREST or OSCP are advantageous

If you're ready to make a real impact in a challenging and rewarding environment, we'd love to hear from you.

Accessibility & Inclusion:

Adecco is a disability-confident employer. We are committed to running an inclusive and accessible recruitment process and welcome applications from candidates of all backgrounds and abilities. If you require reasonable adjustments at any stage, please let us know and we will be happy to support you.