Client Portal Development

I need a client portal primarily focused on project management. The portal should facilitate efficient communication and document sharing with clients.

Key Requirements:
- The portal must support document sharing, specifically for contracts and agreements.
- User roles should include clients, with potential future support for admin and manager roles.

Ideal Skills and Experience:
- Experience in developing client portals with a focus on project management.
- Proficiency in implementing secure document sharing features.
- Ability to design user-friendly interfaces that accommodate different user roles.