I dont really go for big tech, usually I target small to medium sized companies.

So for me when I want to work for a company with embedded / audio etc I just google who is providing such services in the location I wanna work at.

Once I found the target company and their website, a lot of them have "career" or "job" postings on there. If they don't I just send an email with an inquiry about currently open positions with my cv attached, sort of an electronic cold call :)

I don't like to deal with the middlemen I go straight to the source, Frank Lucas style of the software era if you will...