unlocking website manager/ support executive

Hello,
I am looking for someone with experience working for an unlocking (phone unlock) website. Work includes:
- Processing orders (using admin panel)
- Customer support (using ticketing system)
- Pre-sales chat support (whatsapp/ chat tool)
- Weekly/ fortnightly email campaigns
- Raising issues with Vendor/ supplier and negotiations
- Making instructions manual/ blog content with instructions on how to use site/ features.

Excellent written communication (English) skill is a must. It can be a part time/ full time job depending on your existing commitments and experience.

I am expecting a detailed bid on why you suit the profile and not a I can do it bid.
Thanks