I'm looking for an experienced Firefox extension developer to create a
prototype of an extension. The extension will be non-trivial so I'm
only looking for a prototype to be developed at this stage, to assess
the level of effort required and understand the areas of difficulty. I
would expect this to be several days work, which could be performed
over the course of a couple of weeks. This may lead on to full
development depending on how it goes.

You must have significant experience developing previous extensions
and ideally be able to provide samples of your work for reference.
Experience interacting with the DOM of loaded pages and responding to
navigation events in the browser would be very useful. Any experience
working with C# also a plus but not necessary. Amazing, but not
expected, would be experience interfacing between a FF extension
and .NET or COM code.

Please email me at rory dot parore at gmail.