Build an Online Store

Hosting Service will include Squarespace. This is an online store. This will need to have the front end interface looking exactly like [login to view URL]!home/mainPage or better. What needs to be done is that it needs to be more than just an online store which WIX can't offer in it's simple interface. So I am moving it to Squarespace and looking for a programmer to enhance the needs of the website. What needs to be added is to have multiple log in portals for different users. The three log in portals I need are as follows Customers - Users who buy things from the website and have an account which supplies the information as age, location, email, phone number weight, length, Head width, head length, and any other dimension on a persons body (mostly head). Just imagine a clothing store loging for users when people are shopping for clothes. We make helmets and it needs to be a match to the person we are making for so having them supply that information is important. They also need to be able to track there orders when they log in and there history of products they bought. Any Customer can sign up for free. Contractors/Clients - Occasionally we will have jobs posted on our Contractor/Client login portal so that they can either bid or see who's working on a particular job. Each job should be able be posted from the Employee/Admin with a price (whether its Whole Sale or Hourly). Contractor and Client log ins should only be provided by the Employee and Admin only. It can never be just created by signing up. Employee/Admin - They will be able to see the listed Customers who bought items and have them in order of when they were purchased. They should also see a different list seeing the different jobs in the Contractor/Client portal. They should be able to award and put up job listings for people to bid on. It should be something similar to what Freelance is, but just with our contracts that we win. Employee/Admin accounts can only be added by an Admin only. Like I said before, the front end interface should look like the link above. What's most important is having the 3 different log in portals for the Customers, the Contractors/Clients, and the Employee/Admins. Each of those log in portals should display the different information listed above and should be able to be interacted between the said groups. I can provide more detail if necessary.