Senior Penetration Tester: Cloud, Web & App Security Lead

Company: Instil
Apply for the Senior Penetration Tester: Cloud, Web & App Security Lead
Location: Woodhouse
Job Description:

Instil is seeking a Senior Penetration Tester with CHECK to join our growing team in the UK. You will perform hands‑on testing across infrastructure, cloud, web and mobile apps for diverse clients, identifying weaknesses and helping remediate them.

In this role you will mentor junior testers while contributing to developing our methodologies and best practices in offensive security. A supportive environment awaits with opportunities for growth.

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Posted: September 21st, 2026