As part of my business I acquire 3D models of objects using laser scanners. These models sometimes contain extra geometry from the background that needs to be cleaned up / removed.
The freelancer should:
1) Take the 3D models I give them, and remove parts of the model that are in the background or noisy parts (particles, holes, etc). You can use any modelling software you want, I use Autodesk memento which is free.
2) Key skills needed are knowledge of 3D modelling tools or cad tools
Successful engagement could result in lots of recurring revenue if I am happy with the work.
See example of before cleanup and after.