2 phone interviews then on site interview. *1 technical panel interview (3 engineers panel) and 4 one-to-one interviews: General question about coding of C language on embedded real time operating system (RTOS). stack, heap, interrupt handling, memory leak prevention, resource sharing...etc I believed I answered very well. *1 behavior panel interview composed of 5 managers/directors: Manager asked all job related questions about how do I worked with a cross functional team, am I a tem player? What happen if I were behind schedule? Do I feel comfortable to mentor less experience engineer? and based on my answer followed up by more and more questions. One thing I noticed is if you answer the question incorrectly or NOT SO SURE, the subsequent questions is going to more difficult and make you hope you didn't answer the previous one earlier. This is my first behavior panel interview I believe I didn't behave the way I want it to be and I didn't get an offer because of that regardless technically I perform very well.