Senior OT Security Architect: Industrial Network Security

EY; Greenville (SC); Hybrid; USD 105,000 - 192,000; Full time

Benefits offered by this job

Hybrid work model

Total rewards package

Paid time off options

Job summary

EY is seeking an experienced Security Architect – Operational Technology (OT) to provide architecture guidance and technical oversight for industrial, manufacturing, laboratory, and OT environments. This role supports site-level design reviews, network segmentation validation, secure connectivity planning, exception analysis, operational readiness, and risk-based technical decision-making.

The architect collaborates with engineering and operations teams to ensure OT solutions are secure and

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 to site-level implementations.
• Review 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 OT implementations.
• Partner with engineering and operations teams to support transition of approved designs into steady-state support.
• Provide technical input for exception reviews, risk acceptance discussions, and remediation planning.
• Escalate material design risks, control gaps, or operational concerns through governance channels.
• Ensure architecture decisions and risk outcomes are documented and supportable.
• Review secure connectivity patterns involving firewalls, remote access, segmentation controls, monitoring platforms.

Skills

OT security architecture

Network segmentation

Secure remote access

Risk assessment

Documentation

Education

Bachelor's degree in Cybersecurity/Engineering/IT

Tools

Firewalls

OT monitoring platforms

Job description

EY is seeking an experienced Security Architect – Operational Technology (OT) to provide architecture guidance and technical oversight for industrial, manufacturing, laboratory, and OT environments. This role supports site-level design reviews, network segmentation validation, secure connectivity planning, exception analysis, operational readiness, and risk-based technical decision-making.

The architect collaborates with engineering and operations teams to ensure OT solutions are secure and