Hello,
I am very much interested in doing this project. This project seems to be for Home Automation (light, fan etc. control). I've provided similar solution based on Bluetooth for which we've developed hardware as well as Android application for control. One of my team-mate has worked on a commercial product based on ZigBee in his company. I've worked on various Atmega controllers including 48,164, 328, 2560 etc. I've several arduino boards with me (Uno, Nano, Mega) to carry out development and testing. I also have experience in ARM, MIPS and PIC controllers as well. With Atmegas, I've done interfacing of GSM, GPS, Bluetooth, LCD's, I2C, SPI, 1-Wire etc. As per the Gateway, there will be a requirement for TCP/IP connection and iPad integration. I've sound knowledge of TCP/IP communication which might help later on. You may refer to my Portfolio for details of some of my past work.
Though, frankly I've not used Atmel's WSNDemo and Zigbee but I am extremely sure I can start giving results in a weeks time itself. Getting on with WSNDemo and Zigbee will hardly take couple of days. I've read the Use Case document and have got an understanding of it. By 1st weekend itself we can have a discussion as per Ph-I requirement.
I am fine with your payment modes and milestones. Even I don't require 1st quarter of payment at project start. You may evaluate my performance for 1 week an then decide to carry on with work or not.
Kindly spare some time to discuss.
Best Regards,
Polestar