Create and develop a new Wiki

My company is involved in Democratic politics in the U.S. and we have an idea to develop a new Wiki that will be open to public editing and contribution. We have the URL and are using the WikiMedia platform. We need someone to set up the Wiki from scratch, create the structure for articles, (with cross-referencing and search capacities), but also, considering the current political climate in the U.S., to prevent potential hacks and fraudulent contributions. We need someone with the expertise to create a cohesive Wiki, who will provide ongoing consulting to ensure that the site is intuitive and user-friendly.