Senior Controls Engineer

ON.energy; Reston (VA); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) with company match

Paid time off and company holidays

Job summary

ON.energy is seeking a Senior Controls Engineer to lead network-and-controls hardware design for mission-critical facilities. You will work across control systems, SCADA, and IT teams to ensure secure connectivity and compliance, integrating protocols like Modbus, DNP3, and OPC-UA.

We value 8+ years of hands-on experience in project-based settings and a strong ability to read and produce network/architecture drawings. Occasional travel for FAT inspection and site commissioning is expected.

Qualifications

• Bachelor’s degree in controls, electronics, or a similar technical field.
• 8+ years of hands-on controls engineering in project-based or industrial settings.
• Experience with project network deployments, not just operations.
• Strong grasp of TCP/IP, BGP, OSPF, VLANs, VPNs.

Responsibilities

• Lead network-and-controls hardware product design for projects.
• Collaborate with control systems, SCADA, and IT teams for secure connectivity.
• Support industrial protocols like Modbus, DNP3, and OPC-UA.
• Prepare technical information packages for project engineers.
• Co-lead review and validation of network/controls topics during execution.
• Maintain as-built drawings and project documentation.
• Capture design feedback across design, commissioning, and O&M phases.
• Suggest design approaches and preferred vendors for major equipment.
• Participate in product design sprints and commissioning phases.

Skills

Controls engineering

Network deployments

SCADA

OT familiarity

Network drawings

Education

Bachelor’s degree in Controls/Electronics

Tools

Modbus

DNP3

OPC-UA

Job description

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.

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

• 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
• 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 [e-mail]
• Benefits vary by role and location and are subject to change.