Hi,
Would be great to know more about the app you want to convert to wordpress plugin. I've done bunch of plugins, here on freelancer, and off freelancer as well. I'm self-imployed independed developer based in lithuania though right now enjoying warmer climate in mauritius :)
My bid is not final since it's not clear how much work it is out there.
I'm around most of the time, so just drop me a message on IM.
Cheers,
Mindaugas