App development

I am looking for an experienced app developer who can create a service-oriented app for both iOS and Android platforms. The primary function of the app is to provide a specific service to users. I already have a rough idea of how I want the app to work, but I need help with the design process to ensure the functional aspect is working effectively.

Skills and Experience:
- Proficient in app development for both iOS and Android platforms
- Experience in creating service-oriented apps
- Strong understanding of user experience and design principles
- Ability to collaborate and provide input on the design process