Hello
I am an OS X system developer, I have been working with Objective-C, Swift and C++ for over 7 years.
I do have experience developing Audio Units (take a look at the history of my projects), in fact I have created a RemoteIO AU for one of my projects, and a Midi FX unit for MainStage live performances. I do have a very good understanding of the architecture of audio units as well as I am a hobbyist musician myself. I am working mainly with X, but I do have a licensed Logic 9, if necessary.
> The plugin will be a pseudo ensemble / doubler with a minor pitch shift. Think enhanced chorus. I expect this to be a very simple project
I assume you already have some kind of specification for these effects? Can I have a look at it?