Posted 1mo ago•Tysons
Quality Assurance Engineer, PLC Automation
MiddleOn-site (Tysons)Salary undisclosed
Required Skills
PythonAzure
Job Description
ON.energy is setting the standard for large load interconnection. ON’s patented AI UPS™ is a medium-voltage UPS that serves as a firewall, protecting the data center from the grid, and the grid from the data center. With multiple gigawatts currently under construction, we are enabling grid-safe data centers.
The Quality Assurance Engineer is responsible for hands-on experience in PLC programming, industrial protocol testing, and Python-based test automation. Skilled in designing and executing functional and integration test cases across PLC platforms and communication protocols.
Key Responsibilities:
- Design, develop, and execute Unit tests, functional, integration, and regression test cases for PLC-based control systems
- Write and maintain Python-based automated test scripts for testing PLC I/O, HMI interfaces, and communication protocols
- Develop, review, and validate PLC code (Ladder Logic, Function Block Diagram, Structured Text) across Siemens S7-1200/1500
- Collaborate with controls engineers to define acceptance criteria and validate system requirements
- Identify, document, and track defects using tools such as Azure Devops or equiva
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