Onsite OT Field Engineer — Site Readiness

EY; San Antonio (TX); On-site; USD 105,000 - 192,000; Full time

Benefits offered by this job

Hybrid work model (where applicable)

Medical and dental coverage

Pension and 401(k) plans

Paid time off options

Job summary

EY seeks an hands-on Onsite Field Support Engineer – OT to drive site readiness, coordinate infrastructure, onboard assets, validate deployments, troubleshoot, document, and ensure a smooth handoff to ongoing support. This role requires broad technical capability across infrastructure, networking, endpoint support, and practical OT environments.

The ideal candidate will work with site personnel, engineering teams, vendors, and remote support organizations, traveling as needed to implement and

Qualifications

• Bachelor's degree in Information Technology, Engineering, Cybersecurity, Computer Science, or equivalent technical experience preferred.
• 5+ years of field support, infrastructure support, networking, cybersecurity, industrial technology, or implementation roles.
• Experience supporting site-based technology deployments, infrastructure implementation, or operational readiness activities.
• Working knowledge of networking fundamentals, IP addressing, VLANs, routing/switching concepts, and connectivity troubleshooting.
• Ability to travel and support onsite implementation activities as required.

Responsibilities

• Site onboarding, implementation readiness, and deployment activities for OT and industrial environments.
• Site surveys, readiness checks, deployment logistics, and implementation preparation.
• Coordinate local field activities with project teams, engineering resources, site personnel, vendors, and support teams.
• Identify access issues, site constraints, environmental limitations, and technical dependencies that may affect implementation.
• Assist with installation, validation, and troubleshooting of network and security infrastructure.
• Coordinate with specialized engineering teams when configuration, architecture, or advanced troubleshooting support is required.
• Assist with identification, validation, and documentation of OT assets and supporting infrastructure.
• Support asset inventory reconciliation, ownership validation, and documentation updates.
• Assist with onboarding assets into approved monitoring, visibility, or support platforms where applicable.
• Validate asset connectivity and basic operational readiness after implementation activities.
• Support implementation testing, connectivity validation, readiness reviews, and defect tracking.
• Provide hands-on troubleshooting for connectivity, endpoint, OT asset, infrastructure, and deployment-related issues.
• Perform initial triage and coordinate escalation to engineering, architecture, vendor, or operations teams as needed.
• Support post-implementation stabilization and early-life support activities where required.
• Maintain site implementation notes, deployment records, asset information, and support transition documentation.
• Assist with updates to site diagrams, connectivity records, inventory data, and support artifacts.

Skills

Field support

Infrastructure support

Networking fundamentals

Troubleshooting

Documentation

Coordination

Education

Bachelor's degree in IT/Engineering/Cybersecurity/CS

Job description

EY seeks an hands-on Onsite Field Support Engineer – OT to drive site readiness, coordinate infrastructure, onboard assets, validate deployments, troubleshoot, document, and ensure a smooth handoff to ongoing support. This role requires broad technical capability across infrastructure, networking, endpoint support, and practical OT environments.

The ideal candidate will work with site personnel, engineering teams, vendors, and remote support organizations, traveling as needed to implement and