Penetration Tester jobs in United Kingdom

Elite Offensive Security Consultancy | Advanced Testing | High‑Impact Engagements

I’ve recently partnered with a leading advanced penetration testing consultancy that is expanding its presence into the UK. As part of this growth, they are looking for experienced CHECK certified penetration testers to join their newly forming UK team.

This is not your typical testing role. This consultancy is widely recognised for its deep technical capability, research driven approach, and highly complex offensive security engagements. With increasing demand across the UK, they are building a specialist team of top tier testers who want to work on meaningful, challenging, and genuinely exciting projects.

If you’re a CHECK certified tester who thrives on advanced technical work, autonomy, and pushing the boundaries of offensive security, this is the kind of role that elevates your career.

• Delivering advanced penetration testing across a wide range of environments (infrastructure, cloud, applications, mobile, and more)
• Leading and contributing to CHECK engagements for high‑profile clients
• Supporting and participating in red team and threat led operations
• Producing high quality, actionable reporting and technical debriefs
• Working closely with clients to understand objectives and deliver meaningful security outcomes
• Contributing to internal research, tooling, and capability development
• Helping shape the UK team’s technical direction as the consultancy expands its footprint

• Active CHECK certification (CTM or CTL) essential!
• Strong background in offensive security, penetration testing, and vulnerability research
• Experience delivering high quality testing across multiple domains
• Ability to work autonomously in a senior, trusted capacity
• Strong communication skills and the ability to translate technical findings into real world impact
• A passion for advanced testing, research, and continuous improvement

• Join a brand new UK team backed by a globally respected offensive security consultancy
• Work on high impact, advanced engagements, not repetitive or low complexity testing
• Influence the direction, culture, and technical standards of a growing UK function
• Collaborate with some of the most technically capable testers and researchers in the industry
• Fully remote role with flexibility, autonomy, and trust
• Opportunity to contribute to tooling, research, and cutting edge offensive security methodologies