This is really embarrassing, hopefully we are going to find out someone else registered the domain and pointed it towards http://www.rim.com/careers/ as a joke.
I doubt RIM unintentionally let this slip through, the "RIM jobs" joke is as ubiquitous as "that's what she said" in Waterloo.
$ host -t ns rim.jobs
rim.jobs name server xns01lhr.rim.net.
rim.jobs name server xns01ykf.rim.net.