Top notch 3D programmer to do 3D massing model script

Looking for top notch 3D programmer to do 3D massing model script. (Massing refers to this https://en.wikipedia.org/wiki/Massing )
The 3D massing model script/program will allow architects/ designers to input basic parameters of building/floor area and the script will generate all possible arrangements/ layouts of the building within that floor area
Here is video of a massing functionality- watch 2.5 minutes of this video starting from https://youtu.be/vnMBBCBgmns?t=1178 until https://youtu.be/vnMBBCBgmns?t=1335

Requirements:
-must be 3D programmer/coder
-proficient in BIM modelling, CAD software
-preferably building professional like architect, quantity surveyor, civil engineer.

If you can do this, please send
(a) examples of 3D script/software you and your team have developed
(b) your best lowest price
(c) when earliest you can deliver