You may have noticed on the last post of the advent calendar, we're looking for the right two people to join our team in Melbourne:
http://blog.fastmail.com/2014/12/24/...g-at-fastmail/
One of the jobs is working with Neil on the interface, including proper offline support and tons of the more difficult and interesting things you can do with javascript.
The other role is working with me on improving the Cyrus IMAPd server.
And of course, both roles also involve plenty of JMAP and improving email for everybody.