I think it would be a good idea to have a job board on fossunited.org. It would be open to anyone who would value FOSS and FOSS contributions.
Rather than thinking too much about what features to have there, we could just start with a very simple web page where any logged in user can post a job and it will be active for 2 weeks and then expire.
Once we see enough traction, we could think about how to improve it.
Please let me know what you think and if you have any ideas/suggestions.