Senior OT Security Architect - Industrial Cyber Architecture

EY; Baltimore (MD); On-site; USD 105,000 - 192,000; Full time

Benefits offered by this job

Hybrid work model

Medical and dental coverage

Pension and 401(k)

Generous paid time off

Job summary

EY is seeking a Security Architect – Operational Technology (OT) to guide site-level architecture and validation for industrial environments. This senior role focuses on risk-informed decisions, design reviews, and secure connectivity aligned with established standards.

The candidate will work across cybersecurity, infrastructure, engineering, and operations, ensuring OT solutions are secure, supportable, and compliant with Zero Trust and IEC 62443 concepts. Strong communication is essential.

Qualifications

• Bachelor's degree in Cybersecurity, Information Technology, Engineering, Computer Science, or related field preferred.
• 8–10+ years of experience in cybersecurity, infrastructure, networking, industrial technology, or security architecture roles.
• 5+ years supporting OT, manufacturing, industrial, engineering, laboratory, 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, or non-standard OT implementations.
• Partner with engineering and operations teams to support transition of approved designs into steady-state support.
• Provide technical input for risk assessments and exception reviews, and remediation planning.

Skills

OT security architecture

Network segmentation

Secure remote access

Risk assessment

Zero Trust principles

Stakeholder coordination

Documentation

Routing and switching

Firewall policy architecture

Industrial networking

Education

Bachelor's degree in Cybersecurity/IT/Engineering

Tools

Security monitoring platforms

Remote access management tools

Job description

EY is seeking a Security Architect – Operational Technology (OT) to guide site-level architecture and validation for industrial environments. This senior role focuses on risk-informed decisions, design reviews, and secure connectivity aligned with established standards.

The candidate will work across cybersecurity, infrastructure, engineering, and operations, ensuring OT solutions are secure, supportable, and compliant with Zero Trust and IEC 62443 concepts. Strong communication is essential.