Offensive Security / Compromise Assessment - Senior Manager

Role Overview

Grant Thornton is seeking experienced and highly skilled Offensive Security and Compromise Assessment Senior Manager to lead proactive security testing and compromise assessment initiatives across our global enterprise environment. This leadership role is focused on identifying security weaknesses before adversaries can exploit them and determining whether any active compromise already exists within the organization.

You will lead penetration testing, red team exercises, and compromise assessments designed to simulate real-world attack scenarios. In parallel, you will direct environment-wide threat hunts and forensic analysis to identify indicators of compromise (IOCs), unauthorized access, persistence mechanisms, and attacker activity.

This is a hands-on leadership role requiring strong technical expertise in offensive security, threat hunting, forensic investigation, and compromise assessment. You will work closely with Security Operations, Incident Response, Security Engineering, and Leadership teams to validate defenses, identify gaps, and ensure rapid remediation of vulnerabilities and threats.

Your mission is to proactively find and eliminate security risks, validate detection capabilities, and ensure attackers have no place to hide within the organization.