Skilled Artisans & Freelancers Mobile App

I'm seeking a proficient Flutter or React Native developer to help me build a mobile app(Reason for react/flutter is for deployment to iOS and Android) for hiring skilled freelancers based on location. A web version is already available. The app needs to be modern and clean in design.

Key Features:
- User Registration and Profiles
- Geolocation Services
- In-app Messaging

Integrations:
- Payment Gateway
- Social Media Logins

Your proposal should include a timeline.