Custom Door Chime App

I recently purchased a Z-Wave wall plug and a 120 VAC piezo buzzer (3 KHz) that I want to use as a door chime. When any door contact is broken, I want the plug to turn on (activating the buzzer) for 2 seconds then turn off. The shortest “turn off” interval using the Lighting Automation app is 1 minute.

Can someone point me in the right direction how to find an app to do what I need? I am a programmer by trade (Perl, PHP) so I’d happily try my hand at developing an app to do this, but I’m a Smartthings newbie and have zero experience with this environment.

Thanks!