The 3D backend job is to load data uploaded to Sketchfab and clean, optimize, compress and transform it to be viewable in all device types with great accuracy and fidelity with respect to original data.
Furthermore, tools to export and import 3D assets are a very important part of Sketchfab. Every time a user wants to upload or download a model, a whole set of tools starts running to transform data between formats. You will help us to maintain, improve and create new plugins for different 3D software to export and import 3D assets.
The main target is to make it even easier to upload models on Sketchfab and to improve data access. Sometimes by extending our format/software support, sometimes by lowering the hardware or bandwidth requirements to display a scene, and sometimes optimizing the code to run faster in our servers.