Opendoor Software Engineer interview questions

Overall I had a great experience interviewing with Opendoor. I really liked the people I met and think the company is headed in a great direction. Introduced to a recruiter through a friend. Did a phone call meet and greet about what I was looking for, went through a technical phone screen, did an all-day on-site meeting six different people - 2 technical interviews, a lunch culture interview, and 2 system design interviews. Then, after an offer was made, invited back to sit in their engineering all-hands monthly and a team weekly meeting, which were both great experiences.

Had an initial call with a recruiter, who immediately scheduled me for a phone screen. During my phone screen, I was asked a pretty simple coding question, which I found a solution for in about 20 minutes. With some help from my interviewer I optimized it even further with about 15- 20 minutes to spare. Got a rejection a few days later. As others have said their standards seem arbitrary, getting the answer right doesn't necessarily mean you'll move to the next round.