Android Pet Care App Developer

I'm in need of an experienced Android app developer to create a comprehensive pet care application. The app's main functionality will be centered around pet care and management with a variety of specific features.

Key Features:
- Pet Adoption Portal: Integration of a feature that allows users to browse and adopt pets
- Vet Appointment Booking: Users should be able to schedule and manage appointments with veterinarians
- Pet Tracking: Track your pet's activities and health status
- Grooming At Home: Feature to book grooming services at home
- Pet Care Centre: Information on nearby pet care centers
- Emergency Doctor Visit: Direct access to emergency veterinary services
- Home Vaccination: Schedule and keep track of your pet's vaccination appointments

The ideal candidate for this project should have:
- Proven experience in Android app development
- Background in social networking, e-commerce or educational app development is a plus
- Solid understanding of integrating complex features like appointment booking, GPS tracking, and payment gateways
- Ability to create an intuitive and user-friendly interface
- Passion for pets and their well-being

Please provide examples of your previous Android app projects, particularly any involving booking or tracking systems.