Controls Engineer - Siemens PLCs for Grid-Scale BESS

ON.energy; Atlanta (GA); On-site; USD 110,000 - 140,000; Full time

Benefits offered by this job

Competitive salary

Medical, dental, and vision insurance

401(k) with company match

Paid time off and holidays

Job summary

ON.energy is hiring a Controls Engineer to deploy, configure, and support Siemens PLC-based control systems for utility-scale Battery Energy Storage System projects. You will ensure reliable operation and integration with EMS, PCS, BMS, protection systems, and site networks.

You will collaborate with Network Engineers, Deployment Engineers, EMS teams, and Field Commissioning teams, participating in FAT/SAT and on-site commissioning, with travel to project sites as needed.

Qualifications

• Experience with Siemens PLC platforms (TIA Portal, S7-1500/S7-1200) in field deployments.
• Experience commissioning or supporting industrial control systems on site.
• Ability to troubleshoot across controls, networking, and software boundaries.

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 site networks.
• Support communication protocols such as Modbus TCP/RTU, IEC 61850, and other OT interfaces.
• 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

Industrial control systems

OT networks

Troubleshooting

Travel readiness

System integration

Tools

TIA Portal

S7-1500

S7-1200

Modbus TCP/RTU

IEC 61850

Job description

ON.energy is hiring a Controls Engineer to deploy, configure, and support Siemens PLC-based control systems for utility-scale Battery Energy Storage System projects. You will ensure reliable operation and integration with EMS, PCS, BMS, protection systems, and site networks.

You will collaborate with Network Engineers, Deployment Engineers, EMS teams, and Field Commissioning teams, participating in FAT/SAT and on-site commissioning, with travel to project sites as needed.