AddThis Software Engineer interview questions

Submitted my resume online through their jobs portal. Participated in a call with the recruiter/HR and a manager a few days later for an informal interview (non-technical) about myself. Proceeded to the next (and final) round, which was a series of three interviews with engineers. Two were non-technical and one was technical, which included answering 2-3 programming (whiteboard) questions. Non-technical ones involved discussing my projects, classes, and prior experience from my resume. Very friendly interviewers!