Skilled 4axis CAM Programmer for CNC Stone Rotary Carving

I am looking for an experienced designer and CAM programmer with expertise in Autodesk PowerMill or Mastercam for CNC stone carving projects for regular basis for factory super stone art. I need someone who can create original 3D designs as well as prepare optimized 4-axis rotary toolpaths for stone machining. In some projects, I will provide reference images or concepts, and the designer will need to create the 3D model from scratch. In other cases, existing models may need to be modified or optimized. The work includes creating machinable 3D models, planning efficient roughing and finishing toolpaths, checking for collisions, and delivering CAM project files and NC/G-code compatible with my CNC machine. Experience with marble, granite, sandstone, or similar materials and rotary CNC machining is highly preferred. I am looking for a reliable freelancer for ongoing collaboration, as I expect to have regular projects in the future. Please share your portfolio, relevant experience, estimated pricing, and turnaround time.