OT Security Engineer

Job Title: OT Security Engineer

Location: Remote

Job Type: Long-Term Contract

Experience: 5+ years in OT/ICS cybersecurity

Job Overview

Our client is seeking an experienced OT Security Engineer to design and implement cybersecurity strategies protecting Industrial Control Systems (ICS), SCADA, DCS, PLCs, and industrial networks. The ideal candidate will ensure operational safety, system availability, and regulatory compliance while collaborating with IT security, engineering, plant operations, and risk management teams.

Key Responsibilities

• Design and implement OT cybersecurity strategies, policies, standards, and security architectures
• Assess and secure OT/ICS environments including SCADA, DCS, PLCs, HMIs, RTUs, and industrial networks
• Develop OT asset inventories, network diagrams, asset criticality classifications, and risk assessments
• Implement OT network segmentation, industrial DMZs, secure remote access, and IT/OT boundary controls
• Conduct OT security assessments, vulnerability management, configuration reviews, and risk-based remediation planning
• Deploy and manage OT security monitoring, intrusion detection, and threat detection solutions
• Develop and maintain incident response, disaster recovery, and business continuity procedures for OT environments
• Support compliance assessments, audit preparation, and remediation tracking
• Provide security guidance for new industrial systems, modernization initiatives, and digital transformation projects

Required Skills

• Strong understanding of OT/ICS security architecture and industrial control systems
• Hands-on experience with SCADA, DCS, PLCs, HMIs, RTUs, and protocols: Modbus, DNP3, OPC UA, PROFINET
• Industrial network segmentation, firewalls, VPNs, jump servers, secure remote access, zero-trust principles
• OT asset discovery, vulnerability assessment, security monitoring, and incident response
• Familiarity with OT security platforms: Claroty, Nozomi Networks, Dragos, Microsoft Defender for IoT
• Windows and Linux systems, IAM, endpoint security, and network security
• Knowledge of IEC 62443, NIST CSF, NIST SP 800-82, MITRE ATT&CK for ICS, and NERC CIP

Preferred Skills

• Certifications: GICSP, GRID, CISSP, CISM, or IEC 62443 training/certification
• Experience in manufacturing, oil & gas, power generation, utilities, water treatment, or other critical infrastructure
• OT security incident handling, threat modeling, and penetration testing in controlled environments
• Strong documentation, communication, and stakeholder-management skills

Location & Work Model

Fully Remote

Engagement Details

Contract engagement. Candidates with a strong OT/ICS cybersecurity background and critical infrastructure experience are encouraged to apply.