Pretty fast. The people of GE were kind and the process ran smoothly. The questions were more regarding embedded systems and operative systems, so you should study the basics; i.e. what is an embedded system, pointers, binary operators etc. All the process was online since I am living in another country. They were offering 26,000 gross salary with a lot of benefits. Nice, really nce.
First Phone screening
Second Group Panel Interview
Third Background check