OT Systems Engineer

ON.energyis building the backbone of energy and AI infrastructure powering grid-safe data centers and mission-critical facilities. The company supplies and operates hyperscale power systems that solve the toughest resilience challenges, delivering custom solutions for AI data centers, mission-critical facilities, and front-of-the-meter assets. ON recently announced a 5GW partnership, with 3GW currently under construction across multiple hyperscale data center campuses. With patented technology and proprietary software,ON.energydevelops projects worldwide that set new benchmarks for resilience.

Location: Remote with up to 50% required travel to project sites

Role Summary

The  OT Systems Engineer is responsible for deploying, configuring, and supporting operational technology (OT) networks for utility-scale Battery Energy Storage System (BESS) projects. This role is critical to successful commissioning and system handover, ensuring reliable communications between control systems, EMS, PCS, BMS, SCADA, and remote monitoring platforms.

This is a field-facing, deployment-oriented role focused on bringing new projects online.

Key Responsibilities

• Deploy and configure OT network infrastructure for BESS projects, including switches, routers, firewalls, cellular devices, and site communications equipment
• Support commissioning activities by ensuring reliable connectivity between EMS, PCS, BMS, protection relays, meters, and SCADA systems
• Configure network segmentation, VLANs, routing, and secure remote access appropriate for OT environments
• Troubleshoot network and communication issues during commissioning and early operations
• Work closely with Deployment Engineers, Controls Engineers, EMS teams, and Field Commissioning teams to resolve system integration issues
• Support site bring-up, factory acceptance testing (FAT), site acceptance testing (SAT), and handover to service teams
• Document site network architectures, configurations, and as-built drawings
• Contribute to the development of standardized network designs, templates, and deployment procedures
• Support remote monitoring, data acquisition, and secure connectivity to central monitoring platforms
• Travel to project sites as required during deployment and commissioning phases

Required Experience & Skills

• Experience deploying OT or industrial networks in the field (power, renewables, utilities, manufacturing, oil & gas, or similar)
• Strong understanding of TCP/IP networking fundamentals in operational environments
• Hands-on experience with industrial networking equipment (switches, routers, firewalls)
• Familiarity with SCADA, PLCs, HMIs, EMS, or industrial control systems
• Ability to troubleshoot across network, software, and controls boundaries
• Comfortable working in commissioning environments with incomplete information and time pressure
• Willingness to travel to project sites during deployment phases

Preferred Experience

• Experience with utility-scale BESS, solar, wind, or substation environments
• Experience with cellular networking, VPNs, and secure remote access for OT systems
• Familiarity with IEC 61850, Modbus, DNP3, or similar protocols (high-level understanding)
• Experience supporting commissioning teams in the field
• Background bridging IT networking concepts into OT environments

What Success Looks Like (6–12 Months)

• New BESS sites are brought online with stable, secure network connectivity
• Commissioning timelines are supported, not delayed, by network readiness
• Network issues are resolved quickly and collaboratively during deployment
• Site documentation and standards improve over time
• Field and commissioning teams trust this role as a reliable partner

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For US-based roles - What you’ll get:

• Competitive salary + annual performance-based bonus eligibility
• Medical, dental, and vision insurance
• 401(k) with company match
• Paid time off and company holidays 

For Mexico-based roles - What you’ll get:

• Competitive salary + annual performance bonus eligibility
• Christmas Bonus (Aguinaldo): 30 days
• Major medical expenses and life insurance
• Paid time off and holidays (per local policy)

For all roles:

• Professional development and growth opportunities
• Opportunity to grow with a mission-driven team shaping the future of clean energy
• Equal Opportunity: ON.energy is committed to equal employment opportunity and to maintaining a work environment free of harassment, discrimination, or retaliation.
• Accommodations: If you need an accommodation during the application process, email View email address on us.fitly.work
• Benefits vary by role and location and are subject to change.

Agency Notice: ON.energy does not accept unsolicited resumes from staffing agencies, search firms, or third-party recruiters. Resumes submitted without a fully executed Master Services Agreement (MSA) and a written request from an authorized member of our Talent Acquisition team will be considered the property of ON.energy. No placement fees or compensation will be paid for unsolicited candidate submissions.