Senior Penetration Tester - CTM

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Description

We are looking for a Senior Penetration Tester with CHECK to join our growing team. You will play a critical role in delivering high-quality penetration testing engagements across infrastructure, cloud, web, and mobile applications for a diverse range of clients, including software, fintech, manufacturing, engineering, legal, and public sector organisations. This is a hands-on role where your expertise will help identify and remediate security weaknesses, while contributing to the development of our methodologies and mentoring junior testers. If you’re passionate about offensive security and want to work on varied, challenging projects in a supportive environment, we’d love to hear from you. Essential Skills CHECK Team Member (CTM) status Current UK Security Clearance. At least 2+ years of penetration testing experience. Strong experience with web application and network penetration testing methodologies. In-depth 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, and Kali Linux. ). Nice-to-Have CHECK Team Lead (CTL) status (Infrastructure or Applications). Relevant certifications (OSCP, Cyber Scheme). Experience with Hack the Box or Capture the Flag simulations. Why Join Instil? At Instil, we believe great work starts with happy, motivated people. That’s why we’ve built a benefits package that supports your wellbeing, growth, and life outside of work, because when you thrive, so do we. Recognition That Matters: A discretionary annual performance bonus that rewards your impact and contribution to our success. Flexibility Built In: Flexible working arrangements and summer hours, because life isn’t 9 to 5, and balance matters. Financial Security: A highly competitive pension scheme with generous employer contributions, private healthcare, and life assurance fo

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