Security Consultant - CHECK Team Leader

ProCheckUp Ltd; United Kingdom; On-site; GBP 60,000 - 80,000; Full time

Job summary

A cybersecurity firm in the United Kingdom is seeking a Senior Technical Specialist to lead penetration testing engagements and mentor team members. The role demands a valid CREST CCT certification and significant experience in offensive cyber capabilities. The successful candidate will conduct both infrastructure and application testing and maintain compliance with cybersecurity standards. Competitive package offered along with a full-time contract.

Qualifications

• Minimum two years’ experience as a CHECK Team Leader.
• Minimum three years’ professional penetration testing experience.

Responsibilities

• Lead and execute infrastructure and application penetration testing.
• Supervise and mentor CHECK Team Members.
• Develop and review tactics for red team campaigns.

Skills

Assessing Windows environments

Assessing Linux environments

Assessing cloud environments (AWS, Azure)

Understanding of OWASP

Understanding of MITRE ATT&CK

Excellent communication skills

Technical documentation skills

Client-facing skills

Education

CREST CCT certification

CyberScheme CHECK Team Leader certification

Principal Cyber Security Professional title

Job description

Overview

About the Role - This is a senior technical role leading penetration testing engagements, mentoring team members, and driving excellence in offensive cyber capabilities.

Responsibilities

• Lead and execute infrastructure and application penetration testing assignments for public sector and private clients.
• Supervise and mentor CHECK Team Members, ensuring high standards in reporting, methodology, and client communication.
• Develop, implement and review tactics, techniques, and procedures for red team and social engineering campaigns.
• Engage in regular knowledge transfer and technical development within the team.
• Maintain compliance with latest NCSC and UK Cyber Security Council requirements for CHECK Team Leaders.

Qualifications

• Hold a valid CREST CCT (App/Infra) or CyberScheme CHECK Team Leader (CTL-INF/APP) certification.
• Achieved the Principal or Chartered Cyber Security Professional title (UK Cyber Security Council – Security Testing specialism).
• Minimum two years’ experience as a CHECK Team Leader and three years’ professional penetration testing experience.

Required Skills

• Proven expertise in assessing Windows, Linux, cloud (AWS, Azure), and hybrid environments.
• Strong understanding of OWASP, MITRE ATT&CK, and red team methodologies.
• Excellent communication, technical documentation, and client-facing skills.

Preferred Skills

• Experience running red team, purple teaming exercises and developing engagement-specific tooling.
• Familiarity with Technical Surveillance and Counter Measures (TSCM), mobile app testing (iOS/Android), cloud security testing AI Security testing.
• Proven track record leading complex, multi-stage cyber security assessments.

Seniority level

• Mid-Senior level

Employment type

• Full-time

Job function

• Information Technology

Industries

• Computer and Network Security