Senior Penetration Testing Lead (CTL) - Cloud & Infra

Methodfi; Belfast; On-site; GBP 80,000 - 100,000; Full time

Job summary

A leading technology company is seeking a highly skilled Principal Penetration Tester with CHECK Team Lead (CTL) status to lead complex testing engagements across various platforms for a diverse client base. This senior role involves mentoring junior testers, automating processes, and producing actionable reports. The ideal candidate will have at least 5 years of experience, expertise in cloud security, and proficiency in key penetration testing tools. The role is based in Belfast, UK, with competitive benefits that support your growth and well-being.

Benefits

Discretionary annual performance bonus

Flexible working arrangements

Highly competitive pension scheme

Private healthcare

Employee Assistance Programme

35 days holiday

Learning and development investment

Opportunities to volunteer and give back

Qualifications

• CHECK Team Lead (CTL) status - Infrastructure preferred; Applications also considered.
• Current UK SC Clearance.
• Minimum 5 years’ penetration testing experience, with a proven track record of complex engagements.
• Proven experience in cloud security reviews (AWS, Azure, GCP).
• Deep expertise in web, mobile, and network penetration testing methodologies.
• Advanced knowledge of operating systems (Linux, Windows, Active Directory).
• Familiarity with cloud environments and ability to perform cloud security reviews.
• Proficiency with tools such as BurpSuite Pro, Nmap, Nessus, Metasploit, and Kali Linux.
• Strong scripting skills (Python, Shell, etc.).
• Excellent communication and technical report writing skills.

Responsibilities

• Lead and execute penetration tests across infrastructure, cloud, web, and mobile applications.
• Manage end‑to‑end engagements: from scoping and kick‑off sessions to delivery and client debriefs.
• Produce detailed, actionable reports outlining vulnerabilities and tailored remediation steps.
• Stay ahead of emerging threats by researching new offensive techniques and integrating them into our methodology.
• Automate repetitive tasks and streamline testing processes through scripting.
• Mentor and coach junior testers, supporting their technical growth and career development.
• Enhance tools and methodologies, ensuring our services remain cutting‑edge.
• Support pre‑sales efforts as a subject-matter expert in penetration testing.
• Communicate findings effectively to both technical and non‑technical stakeholders.
• Contribute to thought leadership through blogs, white papers, or speaking engagements.

Skills

CHECK Team Lead (CTL) status

Penetration testing experience

Cloud security reviews

Web and mobile penetration testing

Operating systems knowledge

Proficiency with penetration testing tools

Strong scripting skills

Communication skills

Tools

BurpSuite Pro

Nmap

Nessus

Metasploit

Kali Linux

Job description

A leading technology company is seeking a highly skilled Principal Penetration Tester with CHECK Team Lead (CTL) status to lead complex testing engagements across various platforms for a diverse client base. This senior role involves mentoring junior testers, automating processes, and producing actionable reports. The ideal candidate will have at least 5 years of experience, expertise in cloud security, and proficiency in key penetration testing tools. The role is based in Belfast, UK, with competitive benefits that support your growth and well-being.