bigcommerce developing and store management

am looking for well experienced in bigcommerce platform that can manage ( all in one) my online store 1-store development : assure all feature setup properly (payment-shipping – designing – documentation - ) discover the error – solve all problems whenever it needed – maintenance 2- Product management: searching – importing-editing description along with photo and vedio – mapping with relevant category on the site – reprice – listing 3- order management: receive the placing orders – contact supplier – purchase the item – ship and send to the client address– track the order - make sure that its in client home 4- Product review: follow up with customer collect the review from the client – using some review software that help and show good review on the products at the site . 5- Customer services: Be on touch with all customer request and needs ..answer all question on the site or via email ..send greeting form time to time ..mange the chat by choosing the relevant apps such ass live chat or Zendesk … 6- Mange return, and customer complain 7- Manage marketing tools