Custom Real Estate App Development

I'm looking for an experienced app builder to create a custom real estate app for managing property sales campaigns. The app needs to integrate with Monday and ideally Box + Dice.

Essential Features:
- Campaign updates
- Appointment scheduling
- Buyer tracking
- Team chat functionality

User Roles:
- Admin
- Agent
- Client
- Solicitor

App Requirements:
- Compatible with both iOS and Android
- Locked interface; vendors enabled by invite only
- Neat, user-friendly interface for real-time updates (e.g., photography bookings, open house schedules, buyer walkthrough counts)

Ideal Skills & Experience:
- Proficiency in mobile app development
- Experience with integration of external platforms
- Strong UI/UX design skills
- Familiarity with real estate industry needs

Please provide samples of similar work done.