Device design, mask layout, wafer processing, process development, product creation (a couple patents on the way), customer interface, some prototype mechanical assembly, vendor contact/tool and die design, chem tech, janitorial, etc.
IOW, just the typical work mix in a start-up environment.
Wow, you seem to have worked in all the major areas of semiconductor design/manufacturing. Thats a tough market these days, with companies going fabless and design starts falling.