Applied online. Recruiter reached out via email with some initial background questions and a research exercise. I completed the research exercise the same day and 10 days later heard back to schedule a phone interview with a member of the UX team. Phone interview went well, no unexpected questions, and the interviewer was very nice and knowledgeable. Didn't hear anything for a couple weeks, and then received another email asking to schedule another Skype interview with the UX research team. Unfortunately at this time my circumstances changed and I had to withdraw my application from consideration. Overall, my experience was very positive, and everyone I interacted with at GrubHub was very friendly.