Web GL - Three.js Viewer

Hello there,

I am looking for a Three.js webGL Coder who can improve my current setup!
I currently use a Three.js Viewer on my server where I am upload my GLTF models into a folder so that i can view them online. (I export them with 3Dmax or Blender)
I am missing good shadows (soft shadows for products and hard shadows like from a sun)
I am looking for someone who can provide me a better viewer than mine which supports shadows so that I can upload to my server to get better quality-view my models. The viewer should have WEB-GL controls like here in the examples below.
So imagine ththis with the ability to view any model I upload into a folder then.

https://threejs.org/examples/?q=shadow#webgl_shadowmap_vsm
https://threejs.org/examples/?q=shadow#webgl_shadow_contact
https://threejs.org/examples/webgl_shadowmap_csm.html

In the best case you already work with and on such things in Three.js and can set me up a demo and let me know the price.

Thanks and best regards