Ben, myself, and the Bespin team are obviously excited about what we are doing. Giving Web developers a tool platform that is self-hackable and is also built-in-social has us up at night dreaming. We need help though! One way of course is joining the community, but if you fancy hacking on this problem full time, we have a new job opening for a Mozilla Labs engineer.
If you have a passion for open source, working with community, at an open company and want to spend some time making the editor sexy, please apply.
If you are interested in other positions, Mozilla is hiring across the board. I can tell you from experience that it is very difference working for a mission based organization, and if you think you would like that, come check us out.