Design schematic and PCB layout for SBC - RK3399

Need an Engineer to design the circuit schematic and PCB layout for a Single Board Computer that uses a Rockchip RK3399 SoC.
This board will use a Linux based OS and will be used for multiple deployments/applications.
This board will need to be very similar to the Raspberry Pi, Rock Pi 4b, RockPro64 and have a 40 pin GPIO that has the exact same pinout as the Raspberry Pi.

Board will need to have:
RK3399 SoC
4GB RAM - Preferably DDR4 - and must be in dual channel config -- So 2 x 2GB
SD Card - Full sized SD Card slot for the OS
LAN Port - Running at 1Gbe LAN
WiFi + Bluetooth - WiFi @ 2.4GHz and Bluetooth at rev 4.0
2 x USB 3.0 - for peripherals/HID
40 PIN GPIO - GPIO header with the exact same pin layout as the Raspbery Pi
HDMI Port - for single display connection.
USB Type C Port - This port is just to provide power to the board, no data connection on this port -- * Board will have to run on 5v DC
eMMC - Header for eMMC module

Board dimensions to be 90mm x 58mm or less
please keep PCB layers to a minimum as to keep cost down
Datasheets for RK3399 are availible - I can provide.
Engineer can choose the components and provide a BOM.
I understand that there are many boards like this on the market already but my work require all hardware to be non commercial products.

THIS BOARD WILL BE MANUFACTURED AND ASSEMBLED BY CHINA COMPANY.
WHEN COMPLETED YOU WILL PROVIDE ALL THE DESIGN FILES.
WOULD PREFER YOU USE KICAD OR ALTIUM BUT I CAN BE FLEXIBLE

Please note you must have designed multiple PCB’s previously to run Linux Server OS.

Please share examples when applying.