EA bought Shawn Fanning's company Rupture a few years ago and they used Erlang.
http://erlang.2086793.n4.nabble.com/Open-Erlang-developer-po...
That link is not working anymore, but that Erlang position was still open when I left EA in December. So it was unfilled for a month shy of 2 years.
Many candidates have used Erlang in an exploratory capacity and have no real experience supporting a production Erlang application under load or troubleshooting concurrency problems in a distributed system.
That said, it was great to see a lot of passion for Erlang. I enjoy writing it, and hope the language and community continue to evolve.