CHECK Team Leader (Penetration Testing)

We're Hiring: CHECK Team Lead (Security Cleared)

At What’s Exposed, we are a team of cybersecurity experts dedicated to empowering businesses and IT service providers with cutting-edge solutions to protect against ever-evolving digital threats. We are currently seeking a CHECK Team Lead to join us in a flexible capacity either as a permanent team member or a contractor leading the delivery of high-assurance penetration testing services in line with NCSC CHECK and CREST standards.

Position Overview

As a CHECK Team Lead, you will take responsibility for scoping, delivering, and reporting on complex penetration testing engagements, while ensuring compliance with NCSC’s CHECK requirements. You will mentor and guide a high-performing team and act as a technical and client-facing authority.

Key Responsibilities

• Lead and deliver penetration testing assignments under the CHECK scheme across infrastructure and application layers
• Define engagement scope, assess risk, and ensure full technical delivery to agreed timelines
• Produce high-quality reports with actionable findings for both technical and executive audiences
• Support and mentor CHECK Team Members and junior testers
• Maintain up-to-date knowledge of vulnerabilities, exploits, and emerging security trends
• Act as a trusted advisor to clients, helping them understand and reduce risk effectively
• Ensure all activity complies with CHECK and CREST accreditation requirements

Essential Requirements

• CHECK Team Leader (CTL) status with a UK Cyber Security Council (UK CSC) Professional Title in Security Testing at ‘Principal’ level or above
• Eligible to attain SC (Security Check) clearance
• Demonstrated track record of effective customer engagement on previous CHECK engagements
• Hands-on expertise with common testing tools (e.g. Burp Suite, Nmap, Metasploit, Cobalt Strike)
• Strong written and verbal communication skills

What We Offer

• Flexible engagement options: Permanent or Contract
• Competitive day rate or salary package
• Hybrid working with occasional client site visits
• Involvement in high-profile, security-critical projects
• A collaborative environment focused on technical excellence and knowledge sharing

Ready to lead offensive security engagements at the highest level?

Send your CV to ronan.tierney@whats.exposed