User-acounts and webshop development

We are looking for people who would like to work with us to register their company to sell products. We are always looking to expand and would like to welcome anyone on board, from any location, with any amount of experience. To create product listings on Green Lable which takes 3 steps to listing. Once you have done registration you can add your products to sell. Compiling the sales reports at the end. So, at most, if you have at least 3 steps to complete registraion. User registration and login with their username and password. Send registration infromation on register email. Form validation with multiple file upload and images. there will be a three steps form. It has multiple admin approval to approve product. Generate a pdf certificate to sale product. Generate PDF invoice sent by the system to the client. Notify the client after 10 minutes of inactivity. Pop-up to countdown 30s before page closes and Automatic logout. Send notification to each admin after approval by email.