Principal Penetration Tester

Instil Software
📍 Belfast, Belfast, United-Kingdom 💼 Full-time 🕒 Posted February 27, 2026

Job Description

Were looking for a highly skilled Principal Penetration Tester with CHECK Team Lead (CTL) status to join our dynamic security team. This is a senior, hands-on role where youll lead and deliver complex 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. Youll play a pivotal role in shaping our offensive security servicescoordinating end-to-end testing, mentoring junior testers, and contributing to the evolution of our methodologies. If you thrive on tackling challenging security problems, enjoy working in a collaborative environment, and want to keep pushing your technical boundaries, wed love to hear from you. What Youll Do 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. Produc...

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Job Details

  • Location Belfast, Belfast
  • Job Type Full-time
  • Category Education | Head Teaching
  • Posted Date February 27, 2026
  • Application Deadline April 08, 2026