PsychoPy is developed almost entirely by volunteers. If you see those contributors at a conference do pat them on the back and say thanks. And if you need a (paid) consultant on your project then the people listed on this page would be good candidates!
Jeremy Gray, Sol Simpson, Mike MacAskill, Jonas Lindeløv, Richard Höchenberger, Hiroyuki Sogo, Yaroslav Halchenko, Erik Kastman, William Hogman, Ilixa Ltd., Gary Strangman
If you need substantial support from anyone in that team you may be able to hire them as consultants on your project.
The logic and core of the library and application (including the Builder view) were Jon’s creation.
Jeremy Gray added many features (including audio recording and the Rating Scale)
Sol Simpson wrote ioHub (the most advanced Python library for eye-tracking and precise hardware interfacing). If you need support for some advanced Python code especially in the field of hardware and eyetracking you might want to chat wit Sol.
PsychoPy also stands on top of a large number of other developers’ work. It wouldn’t be possible to write this package without the preceding work of those that wrote the Dependencies
Software projects aren’t just about code. A great deal of work is done by the community in terms of supporting each other.
If you need PsychoPy/Python workshop then these might be good people to contact (according to where you are) but please understand that we need to charge for running workshops because it takes us away form our “day jobs”