Something simple, but really useful for the map would be to select different areas/location with a marker. Returning to the list view would show the jobs for that area.

The map would be for location search, the list for details. It'd be cool if you could filter the list view. Of course, it'd be great if you didn't have to switch modes from list to map.

Even how it is right now, this is pretty awesome. I'm looking for jobs and I plan to use this alot.