I received the email from HR asking if I would be interested in the position. Had an HR interview, followed by 2 tech phone interviews before they decided to fly me out to the location. They had my resume and I had all the skills and experience CLEARLY mentioned on it. The interviews went fine except that some of the interviewers started asking me question irrelevant to my position. The hiring manager's response looked a lot positive. The technical interview was also great. I received response from them couple of days later that my skills did not match. I was so surprised that i had all the technical skills the job required and there wasn't even a single question in technical interview that I had missed/responded incorrect. I wish I had known about it before and I would have denied them long before wasting my time.