Modular Bioacoustic Sensor System Design

I'm seeking an experienced PCB designer with expertise in BLE technology and bioacoustic analysis.

The modular stethoscope-like device should feature:

- Up to 5 interchangeable piezoelectric sensors
- High-fidelity analog data streaming via Bluetooth Low Energy (BLE)
- Android mobile app integration for:
- Organ Sound Mode:
- Real-time auscultation of heart, lungs, etc.
- Audio filtering
- Waveform visualization, Spectrogram, Frequency domain graph
- Record, pause, play functions
- Storing recordings in patient profile
- Resonance Analysis Mode:
- Frequency domain scanning
- FFT/resonance peak mapping
- Recordable and analyzable data for pattern comparison

Recording format: WAV

Ideal skills and experience:
- PCB design
- BLE communication
- Mobile app development (Android)
- Signal processing and bioacoustics

Please share your portfolio and relevant experience.