We can completely white-label the service for large clients.
The only alternative domain currently available in our public facing proof-of-concept is poli.link. You can sign up with this link to create an account using the poli.link domain: http://poli.link
I was populating the board with jobs for companies I scored recruiting contracts with.
These contracts made building the JobPosts and driving traffic worth my time(contract = collect a sizable a fee when someone you refer to a position gets hired).
JobPosts drive the organic traffic to JobBoards, so make sure you take SEO into consideration when posting.
I also started with a much lower rate to post on the JobBoard, never free, but as low as $29 at one point. As the traffic grew, so did the price. Now a JobPost costs $349.
Create a Job Board, use the latest social routes to drive traffic and build a list.
The amount you make from the Job Board post is heavily dependent on the amount social followers (drives traffic and makes purchasing more appealing).
https://www.angularjobs.com started making ~$1000/month in revenue with a highly targeted social reach of ~10k followers.
Technical co-founder type? Take what you know about programming and offer recruiting services to the early users of your site. Both companies and developers visit job boards, providing both the clients and talent needed to collect recruitment fees(over 10K in major US cities).