Applied online. 4 phone interviews - 3 technical and 1 HR. The three technical rounds were concerned with the relevant projects on my resume, my knowledge of Simulink and MATLAB, my undertanding of product development and general personality questions in terms of my role in a team, leadership skills, conflict handling etc. The HR round was pretty standard as well. There was also a background check, they needed three references and I gave them two professors and one previous employer from another internship. Overall, a pretty good process. Everyone was very responsive and my manager was very accommodating and flexible in terms of start date and school-related formalities.