Hello,
My experience in the embedded R&D field would make the best candidate for the job. I know that this would be my first project on the Freelancer platform, but don't let the fact that i have no reviews yet, fool you.
I'll try to work on this project in the most transparent and efficient way I can.
I haven't worked with PCBWay but I did send my projects to SeedStudio and my self-designed mini embedded PC with display, touchscreen, ethernet, uarts, GPIOs, audio and wifi still works to this day. All done in Eagle.
Hope to hear from you soon!
All the best,
Madalin