CAD experience (SolidWorks, Creo, or similar)
Electrical schematics and wiring diagram literacy (EPLAN, AutoCAD Electrical an asset)
PLC platforms (Allen-Bradley, Siemens, etc.) and embedded controller experience
Programming/firmware experience (C/C++, Python, or similar) and familiarity with RTOS or embedded Linux are assets
Test automation tools, data acquisition and measurement instrumentation
Version control and issue tracking tools (Git, SVN, Jira)