Very nice site! I was surprised that selecting multiple values to filter by resulted in an "OR" query rather than an "AND" one. Is that just because there isn't a lot of content yet?

Also, some sort of structured data about company locations would be great, especially as the data set grows in size. Even if you don't display it yet, probably worth while to collect it now if you're not already so it can be added easily enough when necessary. I realize the open positions have location, but I might want to "follow" a local company w/o any open positions at the moment in case my or their situation changes.