Secure Client Portal Development

I'm seeking a skilled web developer to create a secure, personalized client portal for my law firm. The website should not only attract new clients but also serve as a dedicated space for our existing clients.

Key Features:
- Personal space for clients with secure access
- Document upload/download (legal documents, personal identification)
- Secure messaging with lawyers
- Access control: clients can only access their own documents

Ideal Skills and Experience:
- Experience in developing secure client portals
- Strong knowledge of document management systems
- Expertise in secure messaging integration
- Familiarity with access control protocols

Design should be minimalist and the portal will be web-only. Please provide examples of similar work done.