This is probably the best job manager plugin for wordpress at the moment, its pretty customization but its full of bugs because it hasn't been actively worked on for a couple years now. Just very minor updates to get it to still function.
To many applications will cause the application area to time out, pagination is broken, and some other bugs.
Its worth a shot if you need something or are only handling a very small amount of applications/jobs.
Could be the best plugin if some more effort went into it though.