HTB
Crowdcruit

Senior Penetration Tester

United Kingdom
Full time

Closed Door Security is a company founded in Scotland specialising in cyber security & IT consulting with a global presence across multiple continents. With a team of experienced professionals, the company offers a comprehensive range of services to help businesses and organisations safeguard their digital assets, protect their sensitive information, and maintain regulatory compliance.

The Role

Ideally, the candidate will have 4-5 years previous experience with penetration testing, good fundamental knowledge of networking and web applications, good time management, and an understanding of how to be business effective in providing solutions to clients. The candidate having CHECK Team Member (CTM), or a CHECK Team Leader (CTL) will be a distinct positive but CHECK work is not required.

Our culture aim is to allow you to work independently while still providing the structure and support you need to get the job done and progress. We do not like to micro-manage and you will be expected to hit the ground running.

Important:

  • Salary: £40k – 55K

  • UK Applications ONLY

  • We take the safety and security of our employees and clients very seriously, and therefore require all potential candidates to successfully pass a comprehensive background check. Candidates must be able to provide all required information and consent to the background check process as a condition of employment.

Requirements

  • CHECK Team Member status, or relevant qualifications & Experience

  • Ability to manage your own time

  • Excellent report writing skills

  • Experience with all operating systems

  • Experience with security tools (E.G Burp, Nessus)

  • Willingness to travel for on-site consulting and audits

  • Knowledge of open security audit standards and projects, including OWASP and ATT(at)CK

  • Passion for IT and IT security

  • Enthusiasm for new technical challenges

  • Experience with scripting languages

  • Experience with vulnerabilities in web applications and API interfaces

  • Certs such as OSCP, CSTM, CSTL, CREST-CRT, etc.

Duties

  • Independent conception, implementation and documentation/reporting of penetration tests.

  • Consulting with clients and working as a team on a range as engagements

  • Support of other employees in penetration tests

What we offer

  • Pension

  • Employee Social Events

  • Personal Development Budget

Security clearance

UK Security Clearance/ Developed Vetting is advantageous

Date posted
Aug 4, 2025