Phone interview followed by a panel interview. Phone interview was basically brief review of the position, my interests and willingness to work independently. Panel interview was in person at Atlanta Campus with 5 engineers. It involved going through my resume for 30min and solving 3 engineering problems for 1h 30min. Total in person interview was about 2h long. Each engineer asked questions in turn. Single main interviewer asked the engineering problems.

Phone screening by hiring manager and in-person interview on-site. Very simple, laid-back. No technical questions, all behavioral and conversational. Was a great experience, got the internship, and accepted. Haven't looked back since!