Convert JPEG to PNG with Transparency

I need a JPEG image converted to a PNG with a transparent background.

Requirements:
- Image size: 3600 pixels wide
- Resolution: 300 dpi
- File size: 1-2 MB
- Background must be transparent; no enhancements needed

Ideal Skills and Experience:
- Proficient in image editing software (e.g., Photoshop)
- Experience with PNG and JPEG formats
- Attention to detail for clean transparency