Creating a site based on jumla

Good afternoon!
It is necessary to develop a bulletin board, more precisely, an “open labor exchange”, i.e., a “open labor exchange”. Adding vacancies, resumes and employment companies from the front-end by the users themselves. It is necessary to create a module or component that will display ads added from the frontend on the site pages in a certain order. It is desirable to create on the basis of an existing template (adaptive), or to develop a new one.