I remember the first Windows CE devices.. glorified perosnal organisers.
I started application development with CE 2.11 with the HP Jornada.
When the CE 3.0 Compaq iPaq PDAs were released I did application development for. I supervised many student projects using them.
With CE 4, particularly 4.2 I start OS development with Platform Builder.
I have been a CE5, CE6 and Compact 7 developer consultant and trainer. I co-authored a book on Compact 7. I also have been an XPE trainer, developer and industry consultant. I also do embedded micros, Windows Mobile and Windows Phone 7 and 8.