Web Offline Form Application

I would like to hire a programmer to build a Macintosh application which would interface with a webserver whether the user is online or offline. When offline, the user has access to unpopulated forms for creating new records. Fields like "Working Title," "Notes," "References," can be entered into the offline database. When connected to the Internet, the user could 'publish' the newly created records which would be POSTed to the web. The successful bidder will work closely with me as I am in the process of designing the backend.