I applied through an employee referral. The process took 2 weeks. I interviewed at Infinera (Bengaluru) in Nov 2015
Interview
You will be called for Face to Face after telephonic screening.
Typically 3-5 rounds would be there, Optionally you may need to give a presentation (especially for Staff and above). Almost the full day will be consumed. Typically you will get to know the status then and there.
Interview questions [1]
Question 1
Typical OS questions on process and memory management