It will be better to look for people that can help you m run a signature campaign or bounties on this forum, there are quite reputed members for that, they can help you and give you necessary advice to run a campaign to be successful, you can have this link and check some of the users.
Based on his ad I don't think that he is looking for a signature/ bounty campaign manager, but more for a marketing expert in general that will help them develop strategy. Advertising altcoin projects on this forum is in my opinion total waste of time and money given the status they have here and the type of bounty hunters that usually join such campaigns. There are far better social media platform for that purpose anyway, like Twitter for example.