Position Details

Type Full-Time

Experience senior

Exp. Years 4-5 years

Education Not specified

Category Cybersecurity

About this role

Cywarden is seeking an OT Security Engineer to secure industrial control systems and critical infrastructure, bridging IT and OT across the full OT security lifecycle.

Key Responsibilities

Develop OT security strategy; conduct OT risk assessments and vulnerability management; design OT network segmentation and DMZ; lead OT incident response; monitor OT/ICS networks

Technical Overview

Lead OT security strategy, risk assessments, asset inventories, vulnerability management; design OT network segmentation and secure remote access; lead OT incident response; monitor OT/ICS networks with specialized tools; align with IEC 62443, NERC CIP, NIST SP 800-82.

Ideal Candidate

The ideal candidate is an experienced OT/ICS security professional (4–5+ years) with hands-on experience across ICS/SCADA environments and a strong grounding in IEC 62443, NERC CIP, and NIST SP 800-82. They should bridge IT and OT teams, drive risk-based security programs, and implement OT segmentation and secure remote access.

Must-Have Skills

Minimum 4–5 years of dedicated OT/ICS cybersecurity experienceComprehensive understanding of OT protocols: ModbusDNP3PROFINETOPC-UAEtherNet/IPBACnetHands-on experience with ICS/SCADA platforms (SiemensHoneywellABBRockwellSchneider ElectricGE)Strong knowledge of OT security frameworks: IEC 62443NIST SP 800-82NERC CIPExperience designing OT network segmentation and Purdue model architectures

Nice-to-Have Skills

GICSP or ISA/IEC 62443 certificationExperience in critical infrastructure sectors (energyutilitiesoil & gasmanufacturingwater)Cloud-connected OT / IIoT securityExperience OT penetration testing

Tools & Platforms

ClarotyDragosNozomiFortinet OTIEC 62443NIST SP 800-82NERC CIPOPC-UADNP3

Required Skills

OT securityICSSCADADCSPLCRTUHMIIEC 62443NERC CIPNIST SP 800-82Purdue modelOT risk assessmentvulnerability managementOT network segmentationsecure remote accessincident responseClarotyDragosNozomiFortinet OTSiemensHoneywellABBRockwellSchneider ElectricGE

Hard Skills

OT securityICSSCADADCSPLCRTUHMIIEC 62443NERC CIPNIST SP 800-82OT network segmentationsecure remote accessrisk assessmentsvulnerability management

Soft Skills

cross-functional collaborationleadershipcommunicationproblem solvingrisk-based thinking

Certifications

Preferred

GICSPISA/IEC 62443 Cybersecurity Certificate

Industry & Role

Industry Energy / Manufacturing

Job Function OT security engineer securing ICS/OT environments across critical infrastructure

Role Subtype Security Engineer

Tech Domains Cybersecurity, Windows Server, Linux, Networking / TCP-IP, Python

Keywords for Your Resume

OT security engineericsscadadcsplcrtuhmiIEC 62443NERC CIPNIST SP 800-82purdue modelot risk assessmentsvulnerability managementsecure remote accesstelecommunicationsno travel requirementOT securityICSSCADADCSPurdue modelrisk assessment

Deal Breakers

Less than 4-5 years OT/ICS cybersecurity experience, No hands-on experience with ICS/SCADA platforms, Lack of familiarity with IEC 62443, NIST SP 800-82, or NERC CIP, Unwillingness to travel to client sites as needed

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