PCB Design for Monitoring System

I need a small PCB board designed for a monitoring system. The board should accommodate the following specifications:

Power Requirements:
- Input: 12V DC 65W power supply
- Outputs:
- 12V 1A (for router)
- 12V 1.5A
- 12V 2A + UART 3.3V (for sensor)

Sensor Connection:
- 1 sensor (4 pins) 12V 2A + UART 3.3V

UART Connection:
- 1x 3 pin output to UART (Pi 3.3V)

Connectors:
- All connectors to be JST type of various pitch and pin number.

Ideal Skills and Experience:
- Experience in PCB design and layout
- Knowledge of power management circuits
- Familiarity with UART communication
- Proficiency in working with JST connectors

Please provide examples of previous PCB work if available.