Fairly easy. I got a good reference, and they needed Linux engineers for a future project. The linux project never panned out but I got to work on some very good projects including work on the CellBE processor, and the first petaflop supercomputer.

Deep on pointers ... bare metal was stressed on , they asked about direct register access using pointer methods and the different mistakes like wild pointer etc ... Focus for this role on embedded RTOS and bare metal implementation of solutions .