Cross-Platform Car Service App Development

I need an experienced app developer to create a car service booking app for both iOS and Android platforms.

Essential skills and experience:
- Proficiency in cross-platform app development
- Experience with service scheduling and payment processing integration
- Ability to create secure and user-friendly user profiles
- Strong UI/UX design skills for a seamless user experience
- Familiarity with backend technologies to support app functionalities

Please provide examples of similar projects and your estimated timeline for ASAP completion.