Hello. I am developing electronic devices for over 10 years. Design a wiring diagram, develop printed circuit boards, printed circuit board layouts are made, I produce an assembly board, write the program for the device and debug programs, and printed circuit board. I make out the design documentation for the serial production of electronic devices. I have a lot of experience designing shield for Arduino and similar Arduino boards. In developing the device using Eagle, Altium Designer, Kicad, AutoCAD, SolidWorks, Arduino. Development is fast and qualitatively. An example some of my works attached.