Location: Anywhere in Country
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External Role Description
Role FamilyOT Field Engineering / Site Implementation Support
Primary FocusSite readiness, hands-on field support, infrastructure coordination, troubleshooting, documentation, and support transition
SeniorityField Engineer / Senior Field Engineer
Role PositioningMulti-disciplinary site-facing technical resource supporting industrial technology deployments
PRACTICE DESCRIPTIONIndustrial and operational technology programs require field resources who can work effectively across site operations, infrastructure, engineering, networking, cybersecurity, vendors, and remote support teams.
The Onsite Field Support Engineer - OT role supports site implementation activities by helping translate approved technical plans into deployed, validated, documented, and supportable site environments.
JOB SUMMARYWe are seeking a hands-on and technically adaptable Onsite Field Support Engineer - OT to support site readiness, infrastructure coordination, asset onboarding, implementation validation, troubleshooting, documentation, and support transition activities in operational technology environments.
The ideal candidate has broad technical capability across infrastructure, networking, endpoint/device support, and practical OT environments. The role requires strong problem-solving skills, field execution discipline, and the ability to coordinate effectively with site personnel, engineering teams, vendors, and remote support organizations.
Role positioning: This is a versatile field role that combines infrastructure support, network troubleshooting, site coordination, asset onboarding, documentation, and practical OT awareness.
KEY RESPONSIBILITIESSite Implementation Support- Support site onboarding, implementation readiness, and deployment activities for OT and industrial environments.
- Assist with 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.
Network and Infrastructure Support- Assist with installation, validation, and troubleshooting of network and security infrastructure.
- Support connectivity checks, cabling coordination, device placement, switchport identification, VLAN/IP information gathering, and basic network troubleshooting.
- Validate communication paths between OT assets, site infrastructure, monitoring platforms, and approved network/security services.
- Coordinate with specialized engineering teams when configuration, architecture, or advanced troubleshooting support is required.
OT Asset Onboarding and Inventory Support- 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.
Testing, Readiness, and Troubleshooting- 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.
Documentation and Support Transition- 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.
- Support knowledge transfer between implementation teams and steady-state support teams.
- Ensure information required by operations teams is accurate, complete, and accessible.
QUALIFICATIONS- Bachelor's degree in Information Technology, Engineering, Cybersecurity, Computer Science, or equivalent technical experience preferred.
- 5+ years of experience in 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 work in manufacturing, laboratory, industrial, or operational environments where safety, production continuity, and site coordination are important.
- Strong troubleshooting, documentation, communication, and coordination skills.
- Ability to travel and support onsite implementation activities as required.
Preferred Qualifications- Experience supporting OT, industrial, manufacturing, laboratory, or critical infrastructure environments.
- Familiarity with ICS, OT asset types, industrial networks, or plant-floor connectivity.
- Experience with switches, firewalls, monitoring tools, endpoint connectivity, or infrastructure deployment activities.
- Experience supporting asset discovery, inventory validation, monitoring platform onboarding, or site documentation activities.
- Relevant certifications such as CompTIA Network+, Security+, CCNA, Microsoft, ITIL, or comparable infrastructure/security certifications.
TECHNICAL SKILLSInfrastructure & NetworkingOT / Site SupportOperations & HandoffNetworking fundamentals
OT asset identification
Implementation validation
IP addressing and VLANs
Site readiness support
Operational readiness reviews
Connectivity troubleshooting
Asset inventory support
Runbook and handoff documentation
Switch/firewall fundamentals
Industrial site coordination
Issue tracking and escalation
SHORT STAFFING PROFILE VERSIONOnsite Field Support Engineer - OT: Provides hands-on site support for OT implementation, asset onboarding, infrastructure coordination, connectivity validation, troubleshooting, documentation, operational readiness, and support transition activities. Serves as a site-facing technical resource who helps bridge central engineering plans with site-level execution realities. Requires broad infrastructure and troubleshooting capability with practical OT or industrial environment awareness.
What we offer youAt EY, we'll develop you with future-focused skills and equip you with world-class experiences. We'll empower you in a flexible environment, and fuel you and your extraordinary talents in a diverse and inclusive culture of globally connected teams. Learn more.
- We offer a comprehensive compensation and benefits package where you'll be rewarded based on your performance and recognized for the value you bring to the business. The base salary range for this job in all geographic locations in the US is $104,800 to $192,200. The base salary range for New York City Metro Area, Washington State and California (excluding Sacramento) is $125,800 to $218,500. Individual salaries within those ranges are determined through a wide variety of factors including but not limited to education, experience, knowledge, skills and geography. In addition, our Total Rewards package includes medical and dental coverage, pension and 401(k) plans, and a wide range of paid time off options.
- Join us in our team-led and leader-enabled hybrid model. Our expectation is for most people in external, client serving roles to work together in person 40-60% of the time over the course of an engagement, project or year.
- Under our flexible vacation policy, you'll decide how much vacation time you need based on your own personal circumstances. You'll also be granted time off for designated EY Paid Holidays, Winter/Summer breaks, Personal/Family Care, and other leaves of absence when needed to support your physical, financial, and emotional well-being.
Are you ready to shape your future with confidence? Apply today. EY accepts applications for this position on an on-going basis.
For those living in California, please click here for additional information.
EY focuses on high-ethical standards and integrity among its employees and expects all candidates to demonstrate these qualities.
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