I have a SDC nanodegree too but not as lucky as you...I also have a masters in MechEng with 5+ engineering experience. Haven't had much success pivoting into the industry.
I’d recommend reading the papers from the DARPA 2007 challenge. https://www.springer.com/us/book/9783642039904
Pro-tip: You can google each chapter title and find PDFs for free.
the less we use this as a verb, the less the next generation will use it.
and cheers on your nanodegree. i've finished 2 myself.
They also provide you with a lot of different perspectives from a practical system design level.