Need Firefox developer to code on TrashMail.net Add-On

I'm looking for a Firefox Add-on developer to extend or remake my 
current Add-On of TrashMail.net.
See: https://addons.mozilla.org/de/firefox/addon/1813

My problem is that I don't have the time to do the work myself.
The work will be paid. Its possible to do the work completly remotely.
You don't need to move.

I would like to pay with fix prices which means to pay not on hour basis 
but on the full project.
If you are interessted, please contact me at [email protected].

-- 
Best regards,
Stephan Ferraro, Director at Ferraro Ltd.