OT/ICS Penetration Tester

Atos Group Karnataka, India

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OT/ICS Penetration Tester & Red Team Specialist

Role Overview
Seeking an experienced OT/ICS Penetration Tester to conduct security assessments, penetration testing, attack-path analysis, and adversary simulation across industrial and critical infrastructure environments. The role focuses on identifying vulnerabilities and attack paths across OT networks, SCADA/ICS systems, PLCs, HMIs, industrial DMZs, remote access infrastructure, and IT/OT environments.

Key Responsibilities

Perform OT/ICS security assessments across Purdue Levels 0-3.
Assess SCADA, PLCs, HMIs, historians, engineering workstations, and OT network architecture.
Evaluate IT/OT attack paths, segmentation, firewalls, remote access, and industrial DMZs.
Conduct controlled red team and adversary simulation exercises.
Assess privilege escalation, lateral movement, identity exposure, and credential security.
Map findings to MITRE ATT&CK for ICS and Enterprise frameworks.
Support purple team exercises and validate security controls.
Develop test plans, risk assessments, rules of engagement, and rollback procedures.
Coordinate testing with OT, engineering, safety, SOC, and stakeholder teams.
Deliver technical and executive reports with remediation recommendations.

Required Skills

OT Security / ICS Security
Penetration Testing / Red Teaming
Industrial Networks & Protocols
Active Directory, Windows, Linux
MITRE ATT&CK for ICS
Purdue Model
Attack Path Analysis
Vulnerability Assessment & Adversary Simulation

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