I have been working as R&D engineer for the last 7 years and throughout my career we have developed and launched several products which are being sold all over the world.
I have a solid experience in embedded system design, PCB design and fabrication, product design and good knowledge in mechanical design.
I am professional in designing embedded systems based on all platforms ARM, 8051, AVR, PIC, Arduino, Raspberry pi, Beaglebone, ..
I have a solid experience in RTOS and all it's components, I have developed several products using my personal favorite RTOS FreeRTOS, which through all our products proved to be scalable and reliable.
I use Altium designer to produce all the PCB requirements.
for the mechanical design I use solid works to deliver the final output files.
I have very good command in Unix like OS such as Linux.
I made so many other projects which was based on RF communication Zigbee, simcom, GPS, Wifi and bluetooth.
I already developed IOT platform to our connected devices using a lot of open source tools and launched some products using this technologies.
I have good experience in web application as full stack developer. I can write powerful applications for both back and front end.
I have written several wep aplications using Nodejs, Angularjs, Bootstrap, Semantic UI, Expressjs, Mongodb, ...
I have some very similar applications to the required one already designed and ready for your trials test.
Hope my qualifications meets your requirements.