Compact PCB Design for Prototyping

I'm in need of a PCB designer who can create a compact PCB for prototyping purposes. This board will need to accommodate a microcontroller, various sensors, a power supply, and Bluetooth components. Specifically, I want to gather data from a sensor (e.g. thermometer) and send that data via Bluetooth to a receiving device (iPad). The PCB will need to be powered by a 3.7 LiPo battery. I'll need all the files, so I can print at PCBWay. The board will need to be no larger than 26 mm by 30 mm. The components will need to lay flat on the board so the overall height is less than 4mm.

Ideal Skills:
- PCB design
- Knowledge of compact design principles
- Experience with prototyping PCBs

Please, only apply if you have significant experience in designing PCBs, particularly for prototyping and compact applications.