Documentation Management App Development

I need a mobile app and website for documentation management, supporting both iOS and Android.

Key Features:
- Document upload and storage
- Document control
- Project correspondence
- Submittals
- RFIs (Requests for Information)
- Transmittals
- STC (Submittal Tracking Change)

User Role:
- Admin

Ideal Skills & Experience:
- Mobile app development (iOS & Android)
- Web development
- Experience with document management systems
- Strong understanding of user roles and permissions
- UI/UX design for intuitive navigation