Cross-Platform Multi-Service App Development

I'm seeking an experienced developer who has built a cross-platform, multi-service provider app. The app should connect users to any type of service providers (home, professional, health, etc.). It must be ONE app.

I would like to purchase your existing solution and hire you for some customizations.

Key Requirements:
- Ability to connect users with various service providers.
- Must be cross-platform (iOS and Android).
- Backend should be robust and scalable.

Ideal Skills & Experience:
- Proven track record in developing multi-service apps.
- Strong expertise in mobile app development (Flutter, React Native, etc.).
- Experience with backend integration and third-party services.
- UI/UX design skills are a plus.

Please provide examples of similar work done, and be prepared to discuss potential customization needs, as we will identify any missing features together.