I have written in the past about a job posting in which WURFL was a reason of preference (you can read about it in WURFL means real money).
Now James Pearce, the new CTO of mTLD, has posted a message on the developers’ site blog. .mobi is seeking developers that know WURFL, that have experience with adaptation, mobile sites and have done something outstanding.
If you think you fit or are interested in working with .mobi, you should check out this post, Technical genius sought.