JobRoller doesn't work on any mobile themes/plugins
I've tried several themes and all the mobile plug-ins for WP
/JobRoller, there is a problem that only blog posts or single page/posts show on the mobile - the job listings do not. This probably could be overcome if the custom listing was modified to show the Jobs as blog posts, but until this can be fixed there's no off-the-shelf way of displaying job listings on your mobile version.
I hope someone can chip in and correct me on this!