Applied through professor reference and got a call from the hr. She asked basic questions like how do you handle conflicts, multitasking, research work etc snd scheduled for a technical interview. The topic for the technical interview needed to be chosen from either control theory, embedded systems or signal processing. I chose control theory and it was all undergraduate level questions like feedback control, eigen values, L'hopitals rule, stability, poles in LHP etc. I aced the interview and since he did not comment on any of my answers couldn't gauge his knowledge. Got a call for the next telephonic behavioral interview. A manager called me and she asked specific instances of constructive feedback, what would you change in the currrent job to make it better, multitasking. In every topic she went into the details. Aced even this interview and there was a followup interview which i messed it up. Initially I applied for summer internship and the hr person said she is looking for a minimum of 4 months. My professor said I can only go for 3 months as I am participating in a robotics challenge. I had two options, could have applied for full time in fall or apply internship in fall. Since internship was more flexible for both students and employers I decided to go for internship in fall. When I explained my situation to them, which is kind of messed up, they said they shall get back to me with a decision and also explained the monetary benefits of internship. Next day I received a mail that they didn't consider me for the current openings.