Job Description

ON.energy is building the power infrastructure that makes the AI era possible. As AI demand surges past what the grid and traditional data centers can support, ON.energy provides a new class of power technology proven at gigawatt scale and trusted by the world’s leading cloud and AI companies. Our systems are already deployed across 2.5 GW of hyper-scale campuses, validated by top U.S. national labs, and certified for grid-safe operation by major utilities. With real products in the field, we’re scaling faster than the grid can, transforming power from a bottleneck into a competitive advantage for the companies building the future.

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

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 recruitment@onenergystorage.com
Benefits vary by role and location and are subject to change.

OT Systems Engineer - OnEnergy

Everything You Need, One Platform.

Stay Ahead of the Curve

OnEnergy Headquarters Location

OnEnergy Company Size

OnEnergy Founded Year

OnEnergy Total Amount Raised

OnEnergy Funding Rounds

OnEnergy's Industries

OnEnergy's Tech Stack

💸 Investors

💻 Job Types

📚 Popular Blog Posts