Hello, I have experience on this fields, iot, awt mqtt, nodejs.
I have developed some similar project before base on awt mosquitto, awt mqtt, awt ios.
If you want i can share you results via teamviewer.
Looking forward to work with you and developing a long term business realtionship. I'm trying to be available all time and react as fast as possible for your comfort.
If you hire me, you won't be disappointed.
Thanks & Regards.