3D face recognition software
Standard recognition libs (OpenCV, dlib, etc.) work with 2D images ... What do you mean with 3D? Could you provide some sample data?
Only implementation in Python is accepted? The chances are high that the performance may be lower if compared to using underlying libs from C++ (f.i., refer to Does performance differs between Python or C++ coding of OpenCV?).
Client needs the contractor to be in Ukraine.
You've specifed the budget 32449 ₽ (in Russian Roubles), and the currency of Ukraine is Hryvnas 🙂