Senior Controls Engineer

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.