Build a Website with Admin and Client panel

Need to build a website having Admin and Client panel. Front of website will display all the services of company such as business registration, insurance, software, website etc. Client will select the service and upload the required documents on the upload section in website. Documents will then be displayed on Admin panel. After completion of service final document or certificate will be added to client portal and client can download it. There will be 3 modules 1. Admin, 2. Partner login 3. User. I want complete security of customer data and documents. Only experienced developers apply