Expedia Group Software Developer interview questions

Took a written test first, and after passing that, attended their onsite recruiting event. First met with recruiters for some time to go over the day schedule, then met individually with 4 engineers. They each asked some behavior questions but mostly focused on coding. It was 2 IC engineers and 2 managers.

Applied through a university recruitment portal. Passed through two phone-call/Skype interview stages (the first ~30 minutes and nontechnical, the second ~1 hour and technical). Invited down to London for an in person interview (travel expenses reimbursed). Interviews happened concurrently with ~15 others applying for internships/graduate positions. First was a ~2 hour (or a little under) technical interview with two engineers. Comprised of whiteboard exercises and a small amount of practical programming on a provided laptop. This was followed by lunch and a group exercise with 3-4 of the other applicants (design and market an idea for a travel app). There was then one final interview with a team leader (fairly nontechnical).