Principal Penetration Tester

JR United Kingdom; Hemel Hempstead; On-site; GBP 70,000 - 100,000; Full time

Job summary

A leading cyber security consultancy in the UK is in search of a Principal Penetration Tester to lead complex security assessments. This role involves advanced penetration testing, mentoring junior staff, and staying informed about emerging cybersecurity threats. Ideal candidates will have significant experience and relevant certifications.

Qualifications

• Extensive experience in penetration testing and security consulting.
• Strong knowledge of attack techniques and exploit development.
• Proven ability to lead high-impact security engagements.

Responsibilities

• Lead advanced penetration testing engagements across various environments.
• Oversee red teaming exercises and provide expert security guidance.
• Mentor junior testers and stay ahead of emerging threats.

Skills

Penetration Testing

Red Teaming

Security Consulting

Threat Modelling

Exploit Development

Leadership

Education

CREST CRT/CCS

OSCP

OSEP

CISSP

Job description

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Client:

Opus Recruitment Solutions

Location:

hemel hempstead, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

6

Posted:

16.06.2025

Expiry Date:

31.07.2025

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Job Description:

Our client, a leading cyber security consultancy, is looking for a Principal Penetration Tester to lead and execute complex security assessments and play a key strategic role, driving high-impact penetration testing, red teaming, and security advisory services for clients across various industries.

Main Responsibilities:

• Lead advanced penetration testing engagements across networks, applications, cloud, and mobile environments.
• Oversee red teaming exercises, delivering real-world adversary simulation insights.
• Provide expert security guidance, working with stakeholders to enhance security posture.
• Mentor and develop junior testers, fostering a high-performance security team.
• Stay ahead of emerging threats, exploits, and attack methodologies to improve testing capabilities.

To be considered:

• Extensive experience in penetration testing, red teaming, and security consulting.
• Strong knowledge of attack techniques, threat modelling, and exploit development.
• Certifications such as CREST CRT/CCS, OSCP, OSEP, or CISSP are highly desirable.
• Proven ability to lead and deliver high-impact security engagements.