ON.energy
Controls Engineer
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Controls Engineer
role at
ON.energy
Location: Miami, FL
Salary: $85,000 – $120,000 (approximately)
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, 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 (6–12 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
What You’ll Get
Competitive salary + performance bonus
401(k) match, health, vision, dental
Paid time off and company holidays
Work that matters—building resilient, secure infrastructure for the future of energy
Seniority Level Entry level
Employment Type Full‑time
Job Function Engineering and Information Technology
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Controls Engineer
role at
ON.energy
Location: Miami, FL
Salary: $85,000 – $120,000 (approximately)
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, 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 (6–12 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
What You’ll Get
Competitive salary + performance bonus
401(k) match, health, vision, dental
Paid time off and company holidays
Work that matters—building resilient, secure infrastructure for the future of energy
Seniority Level Entry level
Employment Type Full‑time
Job Function Engineering and Information Technology
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