Controls Engineer

is 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 softwaredevelops projects worldwide that set new benchmarks for resilience.

Location: Atlanta area is preferred. Role will require travel to projects sites.

Role Summary
The Controls Engineer is responsible for deploying configuring and supporting control systems for utility-scale Battery Energy Storage System (BESS) projects. This role is central to commissioning success ensuring reliable operation and integration of Siemens PLC-based control systems with EMS PCS BMS protection systems and site networks.

Key Responsibilities
Deploy configure and support Siemens PLC-based control systems for BESS projects
Support commissioning activities including system bring-up integration testing and site acceptance testing (SAT)
Troubleshoot PLC logic communications and I/O issues during commissioning and early operations
Integrate PLCs with EMS PCS BMS protection relays meters and SCADA systems
Support communication protocols such as Modbus TCP/RTU IEC 61850 (as applicable) and other OT interfaces
Collaborate closely with Network Engineers Deployment Engineers EMS teams and Field Commissioning teams
Support factory acceptance testing (FAT) and field commissioning activities
Assist with developing standardized PLC configurations templates and commissioning procedures
Review and validate control system documentation drawings and as-built configurations
Travel to project sites during deployment and commissioning phases as required

Required Experience & Skills
Hands-on experience with Siemens PLC platforms (TIA Portal S7-1500 / S7-1200 or similar)
Experience commissioning or supporting industrial control systems in the field
Strong understanding of PLC-based control architectures and OT systems
Experience integrating PLCs with external systems (EMS SCADA PCS BMS protection)
Ability to troubleshoot across controls networking and software boundaries
Comfortable working in fast-paced commissioning environments with time pressure
Willingness to travel to project sites during deployment and commissioning

Preferred Experience
Experience with utility-scale BESS power generation renewables or substation environments
Familiarity with EMS platforms and grid-interactive systems
Experience supporting commissioning teams on live sites
Understanding of cybersecurity considerations in OT environments
Background working alongside EPCs vendors and OEMs

What Success Looks Like (612 Months)
Siemens PLC-based control systems are deployed reliably across new BESS projects
Commissioning timelines are supported through rapid issue resolution and system readiness
Control system integration issues are identified and resolved efficiently
Documentation quality and repeatability improve across deployments
Field and commissioning teams trust this role as a key technical partner

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For US-based roles - What youll 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 youll 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: 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
• Benefits vary by role and location and are subject to change.

Agency Notice: 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 . No placement fees or compensation will be paid for unsolicited candidate submissions.