Senior OT Security Architect - Site and Network Design

EY; Las Vegas (NV); Hybrid; USD 105,000 - 192,000; Full time

Benefits offered by this job

Hybrid work model

Medical and dental coverage

Pension and 401(k)

Paid time off

Job summary

EY is seeking an experienced Security Architect – Operational Technology (OT) to provide architecture guidance and technical oversight for industrial environments. This role supports site-level design reviews, network segmentation validation, and risk-based decision making to keep OT solutions secure and compliant.

You will work with cybersecurity, infrastructure, engineering and operations teams to ensure designs meet standards, enable secure connectivity, and deliver operational readiness

Qualifications

• 8–10+ years in cybersecurity, infrastructure, or security architecture.
• 5+ years supporting OT, manufacturing, industrial, engineering, or critical infrastructure environments.
• Strong communication, documentation, stakeholder management, and risk-based decision-making skills.

Responsibilities

• Architecture Standards Adherence: Apply established OT cybersecurity standards and approved design patterns to site-level implementations.
• Site-Level Design Review and Validation: Review designs for segmentation, zoning, firewall, remote access, monitoring.
• Risk and Exception Support: Provide input for risk assessments, exception reviews, and remediation planning.
• Secure Connectivity and Infrastructure Alignment: Review patterns for firewalls, remote access, segmentation, and monitoring.
• Operational Readiness and Technical Advisory: Ensure designs include monitoring, documentation, and escalation considerations.

Skills

OT security architecture

Network security

Firewall policy review

Zero Trust principles

Risk assessment

Secure remote access

Documentation & handoff

Stakeholder coordination

Industrial networking

Education

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

Job description

EY is seeking an experienced Security Architect – Operational Technology (OT) to provide architecture guidance and technical oversight for industrial environments. This role supports site-level design reviews, network segmentation validation, and risk-based decision making to keep OT solutions secure and compliant.

You will work with cybersecurity, infrastructure, engineering and operations teams to ensure designs meet standards, enable secure connectivity, and deliver operational readiness