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QA Enginer, PLC AutomationASCENDING • Houston, TX, US
QA Enginer, PLC Automation

QA Enginer, PLC Automation

ASCENDING • Houston, TX, US
2 days ago
Job type
  • Permanent
  • Quick Apply
Job description

Title:

  • Quality Assurance Engineer, PLC Automation Location: Remote/Hybrid Term: FTE, Direct Hire Position Overview Our client is building the backbone of energy and AI infrastructure powering grid-safe data centers and mission-critical facilities.
  • The company supplies and operates hyperscale power systems that solve the toughest resilience challenges, delivering custom solutions for AI data centers, mission-critical facilities, and front-of-the-meter assets.
  • Our client recently announced a 5GW partnership, with 3GW currently under construction across multiple hyperscale data center campuses.
  • With patented technology and proprietary software, our client develops projects worldwide that set new benchmarks for resilience.
  • 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.
  • Preferred Experience Proficiency in automated unit testing the PLC Logic Experience with SCADA systems Familiarity with Agile / Scrum methodologies in industrial settings Knowledge of functional safety standards such as IEC 61508 / IEC 62061 Powered by JazzHR
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QA Enginer, PLC Automation • Houston, TX, US

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