Penetration Tester | CHECK Team Member

If you enjoy understanding how systems fail — and using that knowledge to make organisations more secure — this opportunity will interest you.

Our client is an established and growing cyber security consultancy, trusted to deliver high-quality offensive security services across the UK. They are expanding their CHECK capability and investing heavily in building out their Offensive Security practice.

They’re looking for a penetration tester who wants to join at a genuine growth stage — not just deliver work, but help shape the capability as it scales.
Role: Penetration Tester – Offensive Security

Salary: Up to £65,000
Location: London | Hybrid

The Opportunity This role offers a 60% / 40% split:

• 60% Cyber Essentials & Cyber Essentials Plus assessments
• 40% Hands-on penetration testing across infrastructure and applications

As the organisation grows its CHECK capability, there is clear progression and accreditation support. If you are already a Cyber Essentials Assessor accredited professional, the business will support you through further CHECK qualifications as the practice expands.
What You’ll Be Doing

• Delivering penetration tests and vulnerability assessments across networks, infrastructure, and applications
• Conducting Cyber Essentials and Cyber Essentials Plus assessments
• Supporting and leading testing engagements alongside senior testers
• Producing clear, well-structured reports with practical remediation advice
• Using tools such as Metasploit and Burp Suite
• Keeping up to date with emerging tools, techniques, and attack methods
• Collaborating with consultancy and SOC teams, with potential progression into threat hunting

What You Must Have One of the following:

• CHECK Team Member (CTM)
• Cyber Scheme Team Member (CSTM)
• OSCP
• Cyber Essentials Lead Assessor

Plus:

• At least 6 months of hands-on penetration testing experience
• Strong written and verbal communication skills
• Experience with networks and Windows, Linux, and macOS environments
• Eligibility for UK Security Clearance
• A proactive mindset and strong team ethic

Desirable Experience

• Web and mobile application testing
• Cloud technologies including M365, Azure, and Sentinel
• IoT and SCADA environments
• SOC or security operations exposure
• CREST CRT or other relevant certification