Quality Assurance Engineer, PLC Automation

energy is building the power infrastructure that makes the AI era possible. energy provides a new class of power technology proven at gigawatt scale and trusted by the world’s leading cloud and AI companies. S.

national labs, and certified for grid-safe operation by major utilities. With real products in the field, we’re scaling faster than the grid can, transforming power from a bottleneck into a competitive advantage for the companies building the future. 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 equivalent; lead root cause analysis for critical failures Conduct Hardware-in-the-Loop (HIL) and Software-in-the-Loop (SIL) testing where applicable Produce clear test plans, reports, and traceability matrices aligned with release timelines Required Experience & Skills University degree in Software Engineering, Computer Science, Quality Engineering, or a related technical field. 5+ years of hands-on experience in PLC programming and testing across Siemens platform. 5+ years of experience building and maintaining automated test frameworks using pytest or equivalent python framework.

3–5 years of experience with Siemens TIA Portal for PLC development, diagnostics, and commissioning support. Experience designing and executing functional and integration tests, including test case development, defect tracking, and validation of fixes. Working knowledge of industrial communication protocols such as S7, Modbus TCP/RTU, and OPC-UA.

Equal Employment Opportunity

and to maintaining a work environment free of harassment, discrimination, or retaliation.

Benefits

vary by role and location and are subject to change.