PCB Layout Design Project

I need assistance with designing a PCB layout for a mixed-signal circuit. The project involves creating a multi-layer PCB along with the simulation and tests.

Key Requirements:
- Design a PCB layout for a mixed-signal circuit.
- Ensure the PCB is multi-layered.
- Ensure the simulation results and tests are provided as expected by me.
- Ensure that I get a final PCB prototype design which I can get fabrigated successfully.

Ideal Skills and Experience:
- Experience in PCB layout design.
- Experience with IoT related projects.
- Experience with circuit simulations.
- Proficiency in handling mixed-signal circuits.
- Familiarity with multi-layer PCB design techniques.