Hi,
Reviewed requirements and what I understand is you want mobile app designed and developed to connect service provider with users where service providers can register, login, create/manage profile, list their services and more. And, users can search the service provider, view their profile with review/rating, assigned the job or hire the service provider to get his/her job done.
We can build the required app and willing to discuss what all functions you want to be developed for your app to avoid an over/under estimation of quote. Though, we have great expertise in mobile app development and built such websites with features like: register, login, subscription, create profile, manage profile, listing of jobs/products/services, bidding, review/rating, create/release milestone, in built custom online chat module, accept/decline project, match making algorithm, dispute, refund, advance search based on location/specialty/etc, filters, categories/sub-categories, notifications, social sharing, manage tax, dashboard for admin/employer/employee, statistics, invoice generating, email notifications, push-notifications, calendar booking and with many more trendy and bespoke features.
Hope to see your reply and to move further accordingly.
Regards & Thanks.