Siemens PLC Controls Engineer for BESS & Grid Projects

ON.energy; Atlanta (GA); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) with company match

Paid time off and holidays

Job summary

ON.energy is seeking a Controls Engineer to deploy and support Siemens PLC-based control systems for utility-scale Battery Energy Storage System projects across sites in the Atlanta area. You will bridge EMS, PCS, BMS, and protection systems, lead commissioning activities, troubleshoot PLC logic and networking, and help develop standardized configurations.

Travel to project sites will be required. Collaborate with Network Engineers, Deployment Engineers, EMS teams, and Field Commissioning teams

Qualifications

• Experience with Siemens PLC platforms (TIA Portal, S7-1500 / S7-1200).
• Experience commissioning or supporting industrial control systems in the field.
• Strong understanding of PLC-based control architectures and OT systems.
• Experience integrating PLCs with EMS, SCADA, PCS, BMS, protection.
• Ability to troubleshoot across controls, networking, and software boundaries.
• Willingness to travel to project sites during deployment and commissioning.

Responsibilities

• Deploy, configure, and support Siemens PLC-based control systems for BESS projects
• Support commissioning activities including system bring-up, integration testing, and SAT
• Troubleshoot PLC logic, communications, and I/O issues during commissioning and early operations
• Integrate PLCs with EMS, SCADA, PCS, BMS, protection relays, meters, and SCADA systems
• Support communication protocols such as Modbus TCP/RTU, IEC 61850 (as applicable)
• Collaborate with Network Engineers, Deployment Engineers, EMS teams, and Field Commissioning teams
• Support 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

Skills

Siemens PLC expertise

Industrial control systems

OT/ICS knowledge

EMS/SCADA integration

Troubleshooting

Travel readiness

Tools

Siemens PLC (TIA Portal)

SIEMENS S7-1500/S7-1200

Modbus/IEC 61850 & OT protocols

Job description

ON.energy is seeking a Controls Engineer to deploy and support Siemens PLC-based control systems for utility-scale Battery Energy Storage System projects across sites in the Atlanta area. You will bridge EMS, PCS, BMS, and protection systems, lead commissioning activities, troubleshoot PLC logic and networking, and help develop standardized configurations.

Travel to project sites will be required. Collaborate with Network Engineers, Deployment Engineers, EMS teams, and Field Commissioning teams