OT Security Architect

Job Overview

OT Security Architect

Key Responsibilities

• Design and implement secure

  ICS/OT architecture

  in line with industrys best practices and regulatory standard
• Conduct

  technical architecture reviews

  of both IT and OT environments, providing security design decisions during project implementation
• Perform

  threat modeling

  for complex industrial systems and identify risks across control networks and components
• Develop and align cybersecurity policies, standards, and procedures for

  IT-OT integrated infrastructures

• Review network segmentation strategies to ensure secure and compliant architecture based on the

  Purdue model

• Apply security frameworks such as

  IEC 62443

  ,

  NIST SP 800-82

  , and other applicable national/international OT standards
• Conduct

  security assessments

  at IT/OT convergence points and critical plant interfaces
• Lead security architecture discussions and provide technical recommendations to both

  technical and non-technical stakeholders

• Manage time-sensitive security escalations, provide clear remediation steps, and contribute to governance processes
• Stay current with evolving

  threats

  , technologies, and industry trends in OT cybersecurity

Technical Skills

• Strong knowledge of

  ICS systems

  : SCADA, DCS, EMS, PLC, and industrial protocols such as

  OPC, Modbus TCP, Profinet, HART

• Experience with

  network security design

  in segmented OT environments, including firewalls, zones, and secure remote access
• Proficiency in evaluating and securing

  IIoT environments and OT endpoints

• Familiarity with

  supply chain security

  and its impact on operational systems
• Deep understanding of OT threat landscapes and

  risk mitigation techniques

  specific to industrial systems
• Working knowledge of security assessments, configuration reviews, and remediation planning for OT infrastructure

Required Skills

• 10+ years of cybersecurity architecture experience, including 4+

  hands-on OT security experience

• Ability to lead and influence security practices across manufacturing, industry, or pharma domains
• Strong

  documentation, reporting

  , and stakeholder communication skills
• Able to independently drive architectural decisions and manage

  multi-stakeholder conversations

• Familiarity with securing infrastructure and application layers in industrial environments
• Effective in

  fast-paced, high-pressure environments

  with shifting priorities

Mandatory Certifications

• One or more of the following is strongly preferred:

  IEC 62443 certifications

  CISSP

  – Certified Information Systems Security Professional

  GICSP

  – Global Industrial Cyber Security Professional

  CSSA

  – Certified SCADA Security Architect

Good to Have Certifications

• CRISC

  ,

  CISM

  ,

  CompTIA Security+

  , or other relevant cybersecurity certifications.
• Any additional OT/ICS-specific credentials recognized in oil & gas, manufacturing, or critical infrastructure sectors.