Senior OT Security Architect — Industrial Systems

EY

Chicago (IL)

Hybrid

USD 105,000 - 192,000

Full time

14 days+

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Job summary

EY is seeking an experienced Security Architect – Operational Technology (OT) to guide architecture and provide technical oversight for industrial environments. You will support site-level design reviews, network segmentation validation, secure connectivity planning, exception analysis, operational readiness, and risk-based technical decisions.

The role collaborates with cybersecurity, infrastructure, engineering and site teams to ensure OT solutions are secure, scalable and aligned with

Qualifications

Bachelor's degree in Cybersecurity, IT, Engineering, CS preferred.
8–10+ years in cybersecurity, infrastructure, networking, or security architecture.
5+ years supporting OT/manufacturing/industrial environments.
Strong knowledge of network security, firewalls, segmentation, secure connectivity and remote access.
Experience reviewing designs against architecture standards and ops requirements.
Strong communication, documentation, stakeholder management and risk-based decision-making.

Responsibilities

Adhere to OT architecture standards for site-level implementations.
Review OT network, firewall, secure access, monitoring designs for standards alignment.
Identify gaps and recommend remediation options for design constraints.
Support site architecture reviews during modernization and ops changes.
Validate segmentation, zoning, firewall, remote access expectations.
Partner with engineering and operations to transition approved designs into steady-state.
Provide risk assessments and input for exception reviews and remediation planning.
Document architecture decisions and risk outcomes for governance.