I've not use the Jobroller theme at all sorry. Had considered it for another project for after the directory but have been put off a bit by my experience so far.
It all looks great before you purchase.
The pre-sale forum topics are all answered with "Yes that can be done very easily" etc. These questions are answered very fast from the pre-sales support. But you get the feeling they know nothing about the actual themes.
Once you get into the support forums, you can see many questions that have answers, but these answers are hidden to anyone who hasn't purchased. This gives you confidence that they have been answered with help.
Once you buy the theme, you soon see it's other users saying they have the same issue, and other users screaming because the mods all say "Submit an idea and have users vote then we may look at it" That is the standard response even for bugs.
I fixed a few bugs and gave them the fixes, to be told to submit an idea and vote on it as it was not a bug but a "New Feature" that i wanted.
There are still some major issues that they do not plan to fix.
Anyway i'm just having a rant.. But have spent many hours working to get this theme to a stage where it's usable.
Paul.