Unity 3d player for flutter app -- 2

im looking for a unity developer to develop a viewer for our material files with there textures, that the user of the phone can control the camera and the object rotation, beside having a kind of buttons on the material that once the user click it will load a PDF file from firebase link

https://sketchfab.com/3d-models/sijilmassa-fc06d7b15b0342a08a10fed7932f3288