Senior OT Security Architect – Industrial Cyber

EY; Baton Rouge (LA); Hybrid; USD 105,000 - 192,000; Full time

Benefits offered by this job

Hybrid work model

Medical and dental coverage

Pension / 401(k)

Job summary

EY seeks an experienced Security Architect – Operational Technology to provide architecture guidance and technical oversight for industrial OT environments. You will support site-level design reviews, network segmentation validation, secure connectivity planning, exception analysis, and risk-based technical decision-making.

The architect collaborates with cybersecurity, infrastructure, engineering, operations, and site teams to ensure OT solutions are secure and operationally sound.

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, secure connectivity, remote access, and infrastructure support concepts.
• Experience reviewing technical designs against established architecture standards and operational requirements.
• Strong communication, documentation, stakeholder management, and risk-based decision-making skills.

Responsibilities

• Apply established OT cybersecurity standards and approved design patterns to site-level implementations.
• Review proposed OT network, firewall, secure access, monitoring, and infrastructure designs for alignment with approved standards.
• Identify gaps between proposed implementations and established architecture requirements.
• Recommend practical remediation options for design constraints, exceptions, or operational support concerns.
• Support architecture reviews for site implementations, modernization activities, and operational changes.
• Validate alignment with segmentation, zoning, firewall, remote access, monitoring, and operational support expectations.
• Participate in design discussions for complex, high-risk OT implementations.
• Partner with engineering and operations teams to support transition of approved designs into steady-state support.
• Provide technical risk assessments and input for exception reviews and remediation planning.
• Review secure connectivity patterns involving firewalls, remote access, segmentation controls, monitoring platforms, and related infrastructure.
• Advise on Zero Trust principles to OT users, devices, apps, and remote access use cases.
• Validate designs include monitoring, alerting, documentation, and escalation considerations.
• Develop reusable guidance and implementation patterns from site delivery experience.

Skills

Network security

Firewalls

Segmentation

Secure connectivity

Remote access

Infrastructure concepts

Risk assessment

Zero Trust

Documentation

Stakeholder coordination

OT security

Industrial networking

Education

Bachelor's degree in Cybersecurity, IT, Engineering, CS, or related field

Job description

EY seeks an experienced Security Architect – Operational Technology to provide architecture guidance and technical oversight for industrial OT environments. You will support site-level design reviews, network segmentation validation, secure connectivity planning, exception analysis, and risk-based technical decision-making.

The architect collaborates with cybersecurity, infrastructure, engineering, operations, and site teams to ensure OT solutions are secure and operationally sound.