Mobile app for Home service

I am looking for a mobile app developer to create a plumbing services and all House Servives app for the Android platform. The app should include the following features:

– Booking system for customers to schedule appointments
– Payment processing system for customers to pay for services
– GPS tracking to locate the nearest plumber
– In-app chat system for customers and plumbers to communicate
– Integration with social media for easy sharing and promotion of the app

I do not have any existing designs or wireframes for the app, so I will need design assistance. Ideal skills and experience for this job include:

– Experience in mobile app development for Android
– Proficiency in user interface design and user experience
– Ability to integrate payment processing systems
– Strong communication skills for in-app chat system development.