ESP32 Bluetooth Login Device

I'm seeking an experienced developer to create a portable, battery-powered device using an ESP32. The device will connect to a Linux computer via Bluetooth and automatically log in with fixed credentials every 30 minutes. It should operate for 10 hours a day over three months.

Requirements:
- Bluetooth keyboard emulation for login
- Automatic login every 30 minutes
- Use fixed username and password credentials
- Operate 10 hours a day for 3 months on battery

Ideal Skills:
- Experience with ESP32 and Bluetooth
- Knowledge of battery-powered device design
- Familiar with Bluetooth keyboard emulation

Please provide relevant experience and approach.