Hmm, you'll have to look into the so-called "Silicon Beach" around Venice and Santa Monica.
As for the Valley, you might find some tech companies tucked into office space off the 101 as it goes North toward Ventura.
Eventually you're going to want to live near work. Traffic density in LA seems like it's following a Moore's Law style trend.
Despite the media's idea of LA, culturally, it's a lot more like NYC than Hawaii.