Senior OT Security Architect - Site Design & Risk

EY; San Jose (CA); 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)

Job summary

EY is seeking a Senior OT Security Architect to guide site-level architecture, validate designs, and provide risk-based advisory across industrial environments. You will work with cybersecurity, infrastructure, engineering, and operations teams to ensure secure, scalable OT solutions aligned to standards.

The role emphasizes architecture guidance over enterprise governance, with a focus on practical remediation, secure connectivity, and operational readiness across diverse sites.

Qualifications

• Bachelor's degree in Cybersecurity, Information Technology, Engineering 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, and remote access.

Responsibilities

• Apply established OT cybersecurity standards and approved design patterns to site-level implementations.
• Review OT network, firewall, secure access, monitoring, and infrastructure designs for alignment with standards.
• Identify gaps between proposed implementations and architecture requirements; propose remediation options.
• Support site design reviews, segmentation validation, and operational readiness; collaborate with engineering and operations teams.

Skills

OT security

Network security

Zero Trust

Risk assessment

Documentation

Stakeholder management

Education

Bachelor's degree (Cybersecurity / IT / Engineering)

Job description

EY is seeking a Senior OT Security Architect to guide site-level architecture, validate designs, and provide risk-based advisory across industrial environments. You will work with cybersecurity, infrastructure, engineering, and operations teams to ensure secure, scalable OT solutions aligned to standards.

The role emphasizes architecture guidance over enterprise governance, with a focus on practical remediation, secure connectivity, and operational readiness across diverse sites.