---
title: 'Senior Controls Engineer at ON.energy'
canonical: 'https://feeny.ai/job/senior-controls-engineer-on-energy-houston-vg2nka5wx97q'
type: 'job'
last_seen: '2026-10-19'
---

# Senior Controls Engineer at ON.energy

- **Company:** ON.energy
- **Location:** Houston, TX / Miami, FL / Reston, VA
- **Posted:** 2026-10-06
- **Last confirmed live:** 2026-10-19
- **Apply:** https://job-boards.greenhouse.io/onenergy/jobs/4425996009

## Job description

ON.energy is setting the standard for large load interconnection. ON’s patented AI UPS™ is a medium-voltage UPS that serves as a firewall, protecting the data center from the grid, and the grid from the data center. With multiple gigawatts currently under construction, we are enabling grid-safe data centers.

We're looking for a Senior Controls Engineer to help design, document and improve the control hardware inside the AI UPS. You'll own control panel design, I/O and controller architecture, and the documentation and validation that take a product design from the drawing board through factory testing and site commissioning. You'll work closely with power electronics, electrical, battery systems, software and project teams, and you'll be a technical voice on how our controls platform evolves.

## Key Responsibilities

- Design and develop control system hardware for the AI UPS product line, including control panels, I/O architecture, controller and HMI selection, power distribution, and interfaces to power conversion and battery systems.
- Produce and maintain controls documentation: schematics, panel layouts, wiring diagrams, I/O lists, bills of materials, control narratives and as-built drawings.
- Define control architecture between the product's subsystems (inverters/converters, BMS, protection relays, switchgear, auxiliary systems) and to site-level SCADA/EMS.
- Integrate and validate industrial communication protocols (Modbus TCP/RTU, DNP3, OPC-UA, IEC 61850) between product components and customer systems.
- Specify control-network requirements and work with IT and network teams so the product's OT network is segmented, secure and reliable.
- Select and qualify vendors for controllers, panels and key controls components, and work with panel builders on manufacturability and quality.
- Lead or support FAT, SAT and site commissioning; troubleshoot issues and feed lessons learned back into product design.
- Compile technical packages for project engineering and support business development with controls architecture and technical proposals.
- Participate in product design sprints and design reviews, and drive improvements across design, commissioning and O&M.
- Support compliance with applicable standards (UL 508A, NFPA 70/NEC, IEC 61131, IEEE 1547, and cybersecurity frameworks such as IEC 62443).

Required Experience

- Bachelor's degree in Electrical, Controls or Electronics Engineering, or a related field.
- 5+ years of hands-on controls engineering experience in product development, OEM or project-based industrial settings.
- Demonstrated experience designing control panels and control hardware, from schematic through build and test.
- Strong working knowledge of PLCs or industrial controllers, I/O design, and HMI/SCADA integration.
- Hands-on experience with industrial protocols (Modbus, DNP3, OPC-UA and/or IEC 61850).
- Working understanding of OT networking: VLANs, segmentation, managed switches and firewalls.
- Proficiency producing and reading control schematics and architecture drawings (AutoCAD Electrical, EPLAN or similar).
- Experience supporting FAT and field commissioning.
- Clear communication with technical and non-technical teams.
- Willing to travel up to 20% for FAT and site commissioning.

## Preferred Experience

- Controls experience with power conversion equipment, UPS, BESS, inverters, switchgear or medium-voltage systems.
- Mission-critical environments such as data centers, utilities or substations.
- Experience with control panel builders or UL 508A shops.
- Familiarity with protection relays (SEL, GE, ABB) and power-system controls.
- Exposure to industrial cybersecurity standards (IEC 62443, NERC CIP).

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.
- 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.

## About ON.energy

## Company Overview
- **One-liner**: ON.energy supplies and operates hyperscale power systems built to meet the world’s most demanding resilience challenges, delivering grid-safe energy and AI infrastructure through patented technology and proprietary software.
- **Entity Type**: Private (Series B, multiple debt financing rounds)
- **Headquarters**: Miami, Florida, United States
- **Founded**: 2016
- **Founders**: Alan Cooper (CEO & Co-Founder) and Ricardo De Azevedo (CTO & Co-Founder)

## Core Business
- **Primary Industry**: Energy Technology (energy storage, battery systems, critical power infrastructure)
- **Target Customers**: AI data centers, mission-critical facilities, grid-scale asset owners (B2B, enterprise, infrastructure)
- **Mission/Purpose**: To build the backbone of energy and AI infrastructure, making energy resilient, clean, abundant and affordable while solving the toughest power problems in the world.

## Products & Services
- **Hyperscale Power Systems**: Custom, end-to-end solutions for AI data centers and mission-critical facilities, combining advanced power electronics, battery storage and proprietary control software.
- **ON.command™ Energy Management System**: Proprietary software platform for managing gigawatt-scale deployments, optimizing grid stability, energy arbitrage, and uptime.
- **AI.UPS™ Platform**: Patented microgrid control system designed to deliver flickerless, full-facility protection with up to Tier 4 performance for mission-critical facilities.
- **Battery Energy Storage Systems (BESS)**: Grid-scale and commercial & industrial storage solutions for frequency regulation, peak shaving, and renewable integration.
- **Fault-Tolerant Architectures**: Engineered solutions for the most demanding environments, built with Tier-1 components backed by 20-year warranties.

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed (private company)
- **Key Metric**: Total Funding: $262.6M (across multiple debt and equity rounds, including Series B led by Ultra Capital in 2023); Annual Revenue: $4.5M (per LinkedIn estimate, likely reflective of earlier stage); 3 GW+ operating & under construction; 10+ GW production capacity
- **Notable Investors/Partners**: Ultra Capital (Series B lead), SDCL Energy Efficiency Income Trust, Lombard Odier Investment Managers, Live Oak Bank, BridgePeak Energy Capital, Pathward
- **Growth Signals**: 143% headcount growth YoY (148 employees as of 2026), 875% job posting growth YoY (52 open positions), 75+ projects across the Americas, $77.6M debt financing in January 2025

## Competitive Advantages
- **Patented Technology**: Proprietary microgrid control systems (AI.UPS) and energy management software (ON.command) that set new global benchmarks for reliability and uptime (99.9% availability).
- **FEOC Compliant & U.S. Manufacturing**: Proudly engineered and built in America, meeting foreign entity of concern compliance – a key differentiator for domestic infrastructure projects.
- **Gigawatt-Scale Supply Chain**: 10+ GW production capacity with Tier-1 components and 20-year warranties, enabling rapid deployment at scale.
- **Track Record**: Over 150 years of combined team runtime, proven performance across industrial, manufacturing, infrastructure, transportation, and grid-scale storage.

## Strategic Focus
- **Grid-Safe AI Power**: Scaling hyperscale power solutions specifically designed for AI data centers, addressing grid volatility and power quality challenges.
- **Global Deployment**: Expanding across the Americas with a fully ramped supply chain and active projects in 9 countries (US, Mexico, Argentina, Peru, Chile, Canada, etc.).
- **Vertical Integration**: Continuing to develop proprietary hardware and software in-house, from R&D to commissioning and asset management.

## Why Work Here
- **Culture**: Described as dynamic, innovative, and far from traditional corporate mold – autonomous teams with high trust, fast decision-making, and a focus on impact. “If you want predictable, this isn’t it. If you want impact, welcome.”
- **Work Environment**: Cross-functional teams spanning engineering, product, finance, and operations. Locations include Miami (HQ), Houston, Mexico City, Atlanta, and field roles across the US. Hybrid/remote flexibility likely varies by role.
- **Growth Opportunities**: Rapidly scaling company (143% headcount growth) with opportunities in supply chain, project engineering, R&D, software, and IT. Emphasis on professional growth and learning from “the brightest minds in technology, product engineering, finance, and more.”
- **Mission-Driven**: Work that directly impacts energy resilience, clean energy adoption, and AI infrastructure – a chance to solve some of the toughest power problems globally.

## Sources
1. [ON.energy Website](https://www.on.energy/)
2. [ON.energy Greenhouse Careers](https://job-boards.greenhouse.io/onenergy)
3. [ON.energy LinkedIn](https://www.linkedin.com/company/on-es)
4. [ON.energy Team Page](https://www.on.energy/team)
5. [CB Insights - On.Energy Profile](https://www.cbinsights.com/company/onenergy)

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