All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
It is permissible to establish a website to advertise jobs. However, it is not permissible to advertise forbidden jobs, such as working in Riba-based banks, places where wine (all kinds of intoxicants) is manufactured or sold, places where pork is sold, places of gambling, night clubs, and other forbidden jobs: it is forbidden to advertise any of these jobs.
A person who works in any of these jobs is sinful as well the one who helps in it, because it is propagating evil and promoting it.
Allah knows best.