Onsite (Kuala lumpur):Write a modbus protocol based digicell load cell calibration tool.

I have digicell load cell toolkit which are connected to computer through a rs232 to usb conntector. The electronics setup is already there. I want someone to write a software for us in python using Qt, the device installs as a serial port, and interact though RTU modbus mode of modbus protocol. I need some one in kuala lumpur, Malaysia. You'll be required to come to office and interact with testing team at times. Kindly mention your previous experience with programming/interacting with modbus devices. I'll share manual & presentation of the product with shortlisted candidates.