Role Summary:
• We are seeking an experienced OT Security Professional with strong expertise in OT Risk Assessments, Network Segmentation, Security Zoning, Industrial IDS Deployment, and OT Security Architecture. The candidate should have hands-on experience securing Industrial Control Systems (ICS), SCADA environments, and critical infrastructure while aligning security programs with IEC 62443 and NIST SP 800-82 standards.

Key Responsibilities
• Conduct OT Cyber Security Risk Assessments across industrial environments.
• Perform asset discovery, criticality assessment, and cyber risk analysis.
• Design and implement OT Network Segmentation and Security Zoning architectures.
• Develop Industrial DMZ architecture and secure remote access solutions.
• Deploy, configure, and optimize Industrial Intrusion Detection Systems (IDS) and monitoring solutions.
• Perform security gap assessments against IEC 62443 and NIST SP 800-82 requirements.
• Create OT Security policies, standards, and technical procedures.
• Review OT network architecture and recommend security improvements.
• Support incident response and threat hunting activities in OT environments.
• Coordinate with plant operations, engineering, and IT security teams on OT security initiatives.
• Develop road maps and cybersecurity improvement programs. Required Technical

Skills:
• OT Security
• OT Security Risk Assessment
• Vulnerability Assessment & Risk Management
• OT Security Architecture Review
• Industrial Asset Discovery IT-OT Network Security:
• Network Segmentation
• Security Zoning & Conduits
• Industrial DMZ Design




• Firewall Rule Review
• Secure Remote Access Industrial IDS / Monitoring, Experience with one or more:
• Nozomi Networks
• Claroty
• Armis
• Dragos
• Cisco Cyber Vision
• Microsoft Defender for IoT Industrial Protocols Knowledge:
• Modbus
• DNP3
• OPC
• OPC-UA
• BACnet
• PROFINET
• EtherNet/IP
• IEC 61850 Standards & Frameworks Knowledge & Strong understanding of:
• IEC 62443 Series
• NIST SP 800-82
• NIST Cyber Security Framework (CSF)
• ISA/IEC Security Models
• Purdue Reference Architecture

Qualifications:
• Bachelor's Degree in Engineering, Computer Science, Information Security, or related field.
• Robust understanding of industrial automation and control systems. Added Advantage:
• IEC 62443 Fundamentals Specialist
• Nozomi Certified Engineer
• Claroty Certified Professional Desired

Experience:
• Experience securing Manufacturing, Power & Utilities, Oil & Gas, Pharma, Metals, Mining, or Critical Infrastructure environments.
• Experience delivering OT security consulting and assessment engagements.
• Hands-on experience with industrial firewalls, segmentation projects, and OT monitoring deployments.
• Ability to interact with plant management, engineering teams, and executive stakeholders. Key Competencies:
• OT Risk Assessment
• Network Segmentation & Zoning
• IDS Deployment & Tuning
• IEC 62443 Compliance
• NIST 800-82 Framework Implementation
• Security Architecture Design
• Industrial Network Analysis
• Stakeholder Management
• Technical Documentation & Reporting

📌 ARCHITECT - IOT Security (Bengaluru)
🏢 Happiest Minds Technologies
📍 Bengaluru