Senior OT Security Architect - Site & Connectivity

Ernst & Young Oman; Honolulu (HI); On-site; USD 105,000 - 192,000; Full time

Benefits offered by this job

Hybrid work model

Total rewards package

Job summary

EY seeks an experienced Security Architect – Operational Technology (OT) to provide architecture guidance and senior technical oversight for industrial, manufacturing, laboratory, and OT environments.

The role covers site-level design reviews, network segmentation validation, secure connectivity planning, exception analysis, and risk-based decisions, collaborating with cybersecurity, infrastructure, engineering, and operations teams.

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

• Architecture Standards Adherence: Apply established OT cybersecurity standards and approved design patterns to site-level implementations.
• Site-Level Design Review and Validation: Support architecture reviews for site implementations, modernization activities, and operational changes.
• Risk and Exception Support: Support technical risk assessments and impact analysis for non-standard architecture decisions.
• Secure Connectivity and Infrastructure Alignment: Review secure connectivity patterns involving firewalls, remote access, segmentation controls, monitoring platforms, and related infrastructure.
• Operational Readiness and Technical Advisory: Validate that designs include monitoring, alerting, documentation, support records, and escalation considerations.

Skills

OT cybersecurity

Network security

Firewall & segmentation

Secure connectivity

Remote access

Documentation & communication

Risk-based decision making

OST environment experience

Education

Bachelor's degree in Cybersecurity/Engineering/IT

Job description

EY seeks an experienced Security Architect – Operational Technology (OT) to provide architecture guidance and senior technical oversight for industrial, manufacturing, laboratory, and OT environments.

The role covers site-level design reviews, network segmentation validation, secure connectivity planning, exception analysis, and risk-based decisions, collaborating with cybersecurity, infrastructure, engineering, and operations teams.