Lead Penetration Tester & CHECK Team Leader - Hybrid

CBSbutler; Stoke Gifford; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

CBSbutler is seeking an experienced Lead Penetration Tester / CHECK Team Leader (CTL) to join its Offensive Security team in a Bristol-based role with hybrid working (2 days on-site). The position offers ownership of complex engagements across Defence, Government and critical infrastructure, with leadership responsibilities mentoring junior consultants and shaping service offerings.

You will lead testing across infrastructure, applications, cloud and OT, deliver high-quality reports, and work

Qualifications

• Current CREST CHECK Team Leader (CTL) qualification - essential.
• Strong hands-on penetration testing experience across infrastructure, applications, cloud or other complex environments.
• Experience planning, leading and delivering penetration testing engagements.
• Excellent technical report writing and the ability to communicate findings to technical and non-technical audiences.
• Strong stakeholder management and client-facing consulting skills.
• Good understanding of cyber security frameworks, standards and best practices.
• Experience with scripting or automation using Python, PowerShell, Bash or similar.

Responsibilities

• Lead and deliver penetration testing engagements across infrastructure, web apps, APIs, cloud, OT and wireless networks.
• Plan and scope testing engagements in line with CHECK standards and industry best practices.
• Provide technical leadership and quality assurance across testing activities.
• Produce detailed technical and executive reports communicating vulnerabilities and remediation.
• Collaborate with customers and stakeholders to define security requirements and solutions.
• Mentor junior testers and CHECK Team Members.
• Contribute to development of offensive security methodologies, tooling and services.
• Stay updated on threats and attack techniques.

Skills

Penetration testing

CHECK Team Leader (CTL)

Report writing

Stakeholder management

Scripting (Python/PowerShell/Bash)

Analytical thinking

Travel willingness

Job description

CBSbutler is seeking an experienced Lead Penetration Tester / CHECK Team Leader (CTL) to join its Offensive Security team in a Bristol-based role with hybrid working (2 days on-site). The position offers ownership of complex engagements across Defence, Government and critical infrastructure, with leadership responsibilities mentoring junior consultants and shaping service offerings.

You will lead testing across infrastructure, applications, cloud and OT, deliver high-quality reports, and work