Check Team Leader

IO Associates; United Kingdom; Remote; GBP 70,000 - 90,000; Full time

Job summary

A leading cybersecurity firm is looking for a CHECK Team Leader to spearhead security testing for enterprise and cloud environments. The role includes mentoring junior colleagues and delivering impactful technical reports. Candidates should have relevant certifications and at least 5 years of related experience. The position offers a competitive salary up to £80,000 and allows for remote work with occasional travel within the UK.

Qualifications

• CHECK Team Leader certification (CTL-INF - Cyber Scheme or CREST) required.
• 2+ years as a CTL and 3+ years in penetration testing.
• Strong knowledge of Active Directory and cloud security.

Responsibilities

• Lead infrastructure and cloud penetration tests.
• Mentor junior team members and support technical efforts.
• Deliver risk-focused technical reports.

Skills

CHECK Team Leader certification

Penetration testing

Cloud security

Communication skills

Tools

Burp Suite

Nmap

Metasploit

Impacket

Job description

Overview

CHECK Team Leader - Up to £80,000 (Remote with occasional travel to client sites)

We're seeking a certified CHECK Team Leader to lead high-impact security testing across enterprise and cloud environments. This is a key role for an experienced professional ready to take ownership of critical engagements and mentor junior testers.

Key Responsibilities

• Lead infrastructure and cloud penetration tests (AWS, Azure, AD, Kubernetes).
• Mentor and support junior team members.
• Deliver clear, risk-focused technical reports.
• Support red teaming, adversary emulation, and R&D activities.
• Contribute to tooling and service development.

Required Skills & Experience

• CHECK Team Leader certification (CTL-INF - Cyber Scheme or CREST).
• 2+ years as a CTL and 3+ years of penetration testing experience.
• Strong knowledge of Active Directory, infrastructure, and cloud security.
• Proficiency with tools like Burp Suite, Nmap, Metasploit, and Impacket.
• Excellent written and verbal communication skills.

Desirable

• Certifications: OSCP, OSEP, CRTO.
• Scripting with Python, Bash, or PowerShell.
• Experience in red or purple teaming.

Other Requirements

• UK residency for the past 5 years.
• Must be Eligible for SC/DV clearance.
• Full UK driving licence.
• Willingness to travel for client engagements within the UK.

A fantastic opportunity for a skilled penetration tester to step into a senior leadership role. Apply now to help defend the UK's critical systems.