Position Summary 

Terabase is seeking a highly technical Controls Engineer to work on Plant Controls Product team. This role will contribute to development and continuous improvement of our plant-level controls software and validation platforms. 

This role is focused on controls development, product engineering, and system validation across Terabase’s Plant Controls portfolio, including Master Plant Controller (MPC), PV Site Controller, Energy Management System (EMS), Hardware-in-the-Loop (HIL) testing-as-a-service and other initiatives.  

The ideal candidate is deeply experienced in IEC-61131-3 based control logic development, capable of independently debugging complex systems, and comfortable working across software, power systems modeling, and real-time validation environments. 

This role is primarily product engineering focused, with limited project support responsibilities (<20%) as needed. 

Key Responsibilities 

• Controls Development & Product Engineering 

• Design, develop, and maintain control logic for Terabase plant-level controllers using IEC-61131-3 platforms (e.g., Codesys, AcSELerator, or equivalent). 

• Architect modular, scalable, and maintainable control solutions across multiple product lines. 

• Debug, trace, and resolve complex control system issues at both software and system levels. 

• Contribute to feature development, algorithm refinement, and performance optimization. 

• Collaborate cross-functionally with project engineering and product management.  

• Validation & Testing 

• Develop and execute structured test plans for new product features and releases. 

• Support and enhance Hardware-in-the-Loop (HIL) environments for controller validation. 

• Analyze and interpret system performance data to validate functional and grid compliance requirements. 

• Clearly document and communicate test results to internal and external stakeholders. 

• Documentation & Engineering Rigor 

• Produce professional-grade documentation, which may include functional specifications, test plans and validation reports, and release documentation.  

• Maintain strong configuration management and change control discipline. 

• Present technical findings in a clear, structured, and professional manner. 

• Project support 

• Provide technical expertise during project implementation, commissioning, or issue resolution. 

• Support troubleshooting and root cause analysis for deployed systems