Smart TV App Development

I'm looking for an experienced app developer to create a Smart TV app. The app should be compatible with the following platforms:

- Roku
- Amazon Fire TV
- Samsung Tizen
- Android TV

The ideal candidate should have:

- Proven experience in developing apps for multiple Smart TV platforms
- Strong knowledge of platform-specific guidelines and requirements
- Expertise in UI/UX design for TV interfaces
- Proficiency in relevant programming languages and frameworks

Please provide examples of previous work, especially on similar platforms.