I just took a look at the currently frontpaged "Who's hiring" thread. Lots of software development, of course.

Hardware startups are costly and hard.

Now do it on super hard mode and build a thing that has to go 36,000+ km away, never to be seen or touched by a human, and make it super reliable.

We're lucky to work with a great group of investors-- the investors we work with at Andreessen Horowitz both have PhD's, one in CS, the other in EE. Our investor at Lux Capital has a PhD in RF engineering. Another of our investors has a PhD in particle physics. Couldn't ask for a more knowledgable, technically minded group.