Need a C Programmer to support V&V phase Bug Fixing efforts

We are a product company and I manage SW development efforts of our product. I'm looking for somebody who can come on site for eight weeks and support 2-3 rounds of SW System testing & bug fixing efforts. I'm looking for passionate C programmer developers who are capable of understanding product requirements quickly and add value to the validation & defect fixing effort of the new product. Having a background in C programming for industrial grade products is must for this work. Ideal person of interest should be located in Chennai, TN, India because this work requires the freelancer to come to our office physically and perform the work at our lab. Must have previous experience in development of Embedded products. Our company is market leader in Flow Control equipment. The product I refer to is an electrical actuator. Prospective candidates must have embedded systems expertise. If you've worked in development/testing of embedded systems, you can get in touch about the opportunity. Purely Desktop SW/web application/Mobile Application development experience is not preferred at all. Candidate must be from Electrical/Electronics engineering background.