Hire an add on developer

Hello Users,
Can someone tell me where I might find a developer for a Firefox add on. I need it to do some data processing of outgoing gmails. ??

I don’t know where but you should not limit yourself to a Firefox developer. If you can find a Chrome extension developer because he or she can write a Firefox addon also. Firefox addons now have the same APIs as Chrome extensions and there are very minimal differences between them.