Bulk Background Removal for E-commerce

I need a skilled freelancer to remove backgrounds from 51-100 photos. The backgrounds should be replaced with transparent ones. Additionally, natural-looking shadows should be added to the items for a realistic presentation.

Requirements:
- Experience with photo editing software (e.g., Photoshop, GIMP)
- Attention to detail for clean edges
- Ability to handle bulk work efficiently

Ideal skills and experience:
- Prior background removal experience
- Fast turnaround time
- Portfolio showcasing similar work

Please provide your best bid and estimated delivery time.