Senior OT Security Architect - Industrial Control Systems

EY; Louisville (KY); Hybrid; USD 105,000 - 192,000; Full time

Benefits offered by this job

Hybrid work model

Medical and dental coverage

Job summary

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

The ideal candidate has 8–10+ years in cybersecurity or security architecture, with strong OT domain experience and a track record of aligning

Qualifications

• Bachelor's degree in Cybersecurity, Information Technology, Engineering, Computer Science, or related field preferred.
• 8–10+ years of experience in cybersecurity, infrastructure, networking, or security architecture roles.
• 5+ years supporting OT, manufacturing, industrial, engineering, 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 OT cybersecurity standards and approved design patterns to site-level implementations.
• Review proposed OT network, firewall, secure access, monitoring, and infrastructure designs.

Skills

OT security architecture

Network segmentation

Zero Trust

Risk assessment

Stakeholder coordination

Education

Bachelor's degree

Job description

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

The ideal candidate has 8–10+ years in cybersecurity or security architecture, with strong OT domain experience and a track record of aligning