Senior OT Security Architect - Site & Industrial Networks

EY; Birmingham (AL); On-site; USD 104,800 - 192,200; Full time

Benefits offered by this job

Hybrid work model

Paid time off

Job summary

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

The incumbent will ensure OT solutions adhere to established security requirements and approved design patterns, delivering secure, supportable

Qualifications

• Bachelor's degree in Cybersecurity, Information Technology, Engineering, Computer Science, or related field preferred.
• 8–10+ 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, and secure connectivity concepts.
• Experience reviewing designs against architecture standards and requirements.
• Excellent communication, documentation, and risk-based decision-making skills.

Responsibilities

• Apply OT cybersecurity standards and approved design patterns to site-level implementations.
• Review OT network, firewall, secure access, and monitoring designs for alignment with standards.
• Identify gaps between proposed implementations and architecture requirements.
• Support site architecture reviews and validate segmentation, zoning, and remote access expectations.
• Partner with engineering and operations to transition approved designs into steady-state operations.

Skills

OT security

Security architecture

Zero Trust

Network segmentation

Secure remote access

Firewall policy

Risk assessment

Industrial networking

Documentation

Stakeholder coordination

Education

Bachelor's degree in Cybersecurity/Engineering/IT

Job description

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

The incumbent will ensure OT solutions adhere to established security requirements and approved design patterns, delivering secure, supportable