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Houston, Texas, United States; Miami, Florida, United States; Reston, Virginia, United States; Tysons
Posted · 20.09.2026
Greenhouse (US)

# Senior Controls Engineer

ON.energy

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 with project-based engineering experience to lead network-and-controls-related hardware product design, documentation, project-specific technical compliance and support the development activities related to these products. This is a product focused role—we need someone who can speak fluently about both network architecture and industrial control systems, ideally have experience in mission critical applications, and interface with IT, software, project, commissioning and O&M engineering teams.  Key Responsibilities:  Support the business development team by providing technical proposals e.g. network diagrams that meet the customer’s needs. Collaborate across control systems, SCADA, and IT teams to ensure complete and secure connectivity Integrate and support industrial protocols like Modbus, DNP3, and OPC-UA Compile product technical information packages for the project engineering team. Co-lead review and validation of network/controls product-related topics during the project execution phase.  Maintain technical documentation including as-built drawings Support product development by capturing design improvement feedback from the different project phases: design, commissioning and O&M. Support product development by recommending design approaches and vendors of the main equipment. Participate in product design sprints with the development team. Participate in the product’s commissioning phase.  Required Experience Bachelor’s degree in Controls Engineering, Electronics Engineering, or similar technical field. 8+ years of hands-on controls engineering experience in project-based or industrial settings. Proven experience in project network deployments, not just operations Strong grasp of protocols (TCP/IP, BGP, OSPF, VLANs, VPNs) Familiarity with control systems and operational technology (OT) Ability to produce and read network and control architecture drawings Excellent communication skills across technical and non-technical teams. Willing to travel up to 20% for product FAT inspection and site commissioning witnessing.  Preferred Experience Certifications: ISA CAP/CCST, Rockwell, Siemens, Schneider or similar Experience with BESS, SCADA, EMS, Safety Systems or utility-scale infrastructure Background in energy, utility, or data center environments  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.

This job was verified from Greenhouse (US). Applications are completed on the original source.

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