I need a freelancer

I’m looking for a reliable electronics engineer to review and improve my existing working prototype.

My project includes:
- A central unit based on Arduino Uno
- An LCD display
- Two MPR121 capacitive touch sensors
- An nRF24 wireless module
- A battery shield
- A custom DIY PCB that integrates all components
- A second unit based on an RF Nano (used as a weapon/sword unit)

Everything is working, but I want to make the system fully reliable, especially:
- Touch detection
- Wireless communication
- Power supply (LiPo 3.7V + charging system)
- Firmware stability
- Possibly upgrade to ESP32
- Future integration with internet for remote assistance / data / OTA

I’d like you to:
- Review my current design and firmware
- Suggest improvements (hardware/software/components)
- Recommend the best configuration for maximum reliability

If the first phase goes well, we can continue with PCB redesign and firmware update.

Can you help with this? Please let me know your availability and a price estimate for the initial review.