End-to-End E-commerce Site Management

I am primarily looking for an expert in e-commerce site management who can efficiently handle tasks from niche selection, product selection, preparing products marketing material, inventory management to product uploads, manage marketing campaigns and order fulfillment. While specific skills in website design and layout or payment gateway integration aren't a requirement, experience in e-commerce, particularly with product catalog management is a tremendous plus. The time frame for completion hasn't been determined, leaving flexibility for a realistic and quality-focused project timeline.

Milestones List:
Milestones - First Month:

Week 1:
Research and Planning Conduct market research for niche identification - Start
Finalize setting up the e-commerce platform & related social media accounts.

Week 2:
Agree and identified the product selection criteria - To be approved
Product Selection & prepare the marketing material - 2- 5 products
Define target audience and create buyer personas - for the 2-5 products

Week 3:
Marketing Implementation Launch marketing campaigns.
Monitor campaign performance.
Optimize based on results. Initiate customer service processes.

Week 4:
Research and Planning Conduct market research for niche identification - Completed.
Formalize marketing strategy and outline campaigns.
Agree on the next month milestones.