Senior OT Security Architect - Industrial Cybersecurity

EY; Des Moines (IA); On-site; USD 105,000 - 190,000; Full time

Job summary

EY seeks an experienced Security Architect – Operational Technology (OT) to provide architecture guidance and oversight for industrial, manufacturing, laboratory, and OT environments. The role supports site-level design reviews, network segmentation validation, secure connectivity planning, and risk-based technical decision-making across cybersecurity, infrastructure, engineering, and operations teams.

This senior advisory role emphasizes adherence to established design patterns, risk

Qualifications

• Bachelor's degree or higher in cybersecurity, IT, engineering, CS, or related field required.
• 8+ years in cybersecurity, infrastructure, networking, or security architecture roles.
• 5+ years supporting OT, manufacturing, or critical infrastructure environments.
• Strong understanding of network security, firewalls, segmentation, secure connectivity, remote access, and infrastructure support.

Responsibilities

• Apply established OT cybersecurity standards and approved design patterns to site-level implementations.
• Review OT network, firewall, secure access, monitoring, and infrastructure designs for alignment with standards.
• Identify gaps between proposed implementations and architecture requirements and propose remediation options.
• Support site design reviews, modernization activities, and operational changes with validation of segmentation, zoning, firewall, remote access and monitoring expectations.
• Provide risk assessments, input for exception reviews, and remediation planning; document decisions and outcomes.
• Review secure connectivity patterns, Zero Trust alignment for OT users/devices/apps/remote access and advise on dependencies impacting implementation and support.

Skills

OT security architecture

Network security

Risk-based decision making

Stakeholder management

Education

Bachelor's degree in Cybersecurity, Information Technology, Engineering, Computer Science, or related field

Tools

CISSP

GICSP

GIAC

IEC 62443

Security+

Network+

Job description

EY seeks an experienced Security Architect – Operational Technology (OT) to provide architecture guidance and oversight for industrial, manufacturing, laboratory, and OT environments. The role supports site-level design reviews, network segmentation validation, secure connectivity planning, and risk-based technical decision-making across cybersecurity, infrastructure, engineering, and operations teams.

This senior advisory role emphasizes adherence to established design patterns, risk