(Senior) Penetration Tester

Deloitte Oy

Full-time Professional Services
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Location
helsinki, uusimaa, Finland
Posted
July 26, 2026

Job Description

Overview

We are seeking a cyber professional focused on offensive security. The role centers on performing penetration testing and red team exercises for clients, with opportunities to participate in a variety of cyber engagements including infrastructure and application security reviews, incident response, source code reviews, vulnerability and architecture assessments, or testing hardware, IoT, and ICS/OT/SCADA technologies depending on experience and interests. You will collaborate with global and local teams of cyber professionals to support security initiatives.

Responsibilities

  • Perform penetration tests on web, mobile, and infrastructure platforms to identify and mitigate security vulnerabilities.
  • Simulate determined and sophisticated cyber threat actors to evaluate the effectiveness of security controls.
  • Prepare comprehensive and clear reports on security findings with actionable remediation recommendations and present them t...