Red Hat Software Engineer(Developer) interview questions

First I had e-mail about my application. After I accepted to talk about available opportunities in Red Hat recruiter call me and we talk about some basic stuff, e.g. what do I do and what are my interests and she talk about company and related matters. We continued and arranged my possible job position over a e-mail. After that recruiter arrange me i tech interview. Tech interview was pretty easy, guys were really friendly and helpful all the time. But I kinda blow up cuz I was so nervous. Interview took about an hour.

I found the job description on local java meetup group. A recruiter post it. Then I got connected with her. She introduced me to the position. Then I had a screen technical interview with her. After a day, she told me I passed it. After that, she told me that she would talk with a software manager and schedule a phone interview. I waited for about 10 days before they gave me the call. The interview was very technical. Then the recruiter called me after 3 hrs to tell me I was denied.