Hi,
I have experience for 15+ years in electronics/embedded development.
I have successfully replaced legacy control panels and electric circuit control boxes in industrial machinery for several times. Replacing old relay-based, electric/electronic timer modules, buttons, sinalizers, etc. with custom microcontroller-based electronics. Off-the-shelf and/or open hardware/software solutions used whenever possible with preference for Arduino based hardware.
Regarding Arduino, I have several years of advanced AVR/arduino development, including library development from scratch. Practically all Arduino AVR boards used, like: 2009, 2010, UNO, MEGA, NANO, MICRO, MINI, etc. Several shields used like Ethernet (W5100, ENC28J60, etc.) with various IP protocols implementation, various graphical TFTs with and without touchscreen and various BUS types (parallel, SPI, I2C, etc.), all kinds of sensors and buses, serial and parallel memories, etc.
If you are interested in my bid, please let me know some more details about your project and I'll be able to answer you back telling if I'm up to the task or not. Feel free to contact me.
Regards,
Carlos.