Hi,
I would like to offer You my service. Currently I`m working in Air Force Institute of Technology in Poland. My last main project was to develop data measurement and recording system. It is a digital and analog board with 4 layers. The main CPU is PIC32MX795 which is connected with many interfaces (RS232, USB, I2C, SPI), sd card and analog amplifiers. Analog signals are coming to the built in A/C to develop control signal for 4 pairs of relays. I was responsible for preparing electric schematics and pcb board with 3d components - everything in Altium Designer. After that I send it to the manufacturer. Prepared pcb board was tested electrically afterwards - it was also my responsibility. Currently I have finished programming it in C language.
If You would have any questions, please send me a message. My email is daimon5(at)wp.pl.
Best Regards,
Krzysztof