Cross-Platform Bluetooth Control Software

I'm seeking a developer to create software that allows users to control Bluetooth keyboards using custom Bluetooth devices. The software needs to be compatible with Windows, macOS, and Android.

Key Requirements:
- Interact with Bluetooth keyboards
- Control media (play, pause, volume) and text input keys (letters, numbers)
- Cross-platform compatibility (Windows, macOS, Android)

Ideal Skills & Experience:
- Proficiency in Bluetooth communication protocols
- Experience developing cross-platform applications
- Strong background in media control integration

Please provide your portfolio and relevant experience.