I applied through an employee referral. The process took 2 weeks. I interviewed at Rafael in Apr 2014
Difficult interview
Application
I applied online. I interviewed at Rafael
Interview
Met with three engineers, asked several technical questions about some courses I learned. The questions were high level and too complex for my knowledge (I just finished my first semester)
Interview at Rafael site, meeting with two members of the team I was applying for. Tough interview, need to study hard next time. Study first and second year material and you should be fine.