I need someone who will develop an App for our association

Name of Association : The Bombay Referees Association. Nature of work : It is a 70 year old association which comprises of people working honorary, mostly ex referees only, who have a very small corpus and that supports to meet basic needs. Referees are nurtured and trained for officiating the game of football. It is a private small body and supports the district and state and referees who get officially qualified go ahead to officiate at the national and higher level. Pain Area as of today : To be able to have a system to receive availability of individual referee for local matches in Mumbai. Map the matches and schedules of games to be played and assign referees matches. If an application could be developed, where entry of matches is done, referees in their individual logins could post their availability and the app would run in the back end data to generate referee posting. How can someone help.