1 hour phone screen followed by 4 hour onsite. whole process from first contact to offer was about 5 days. They like to move very quickly. Phone screen/onsite is pretty standard format/content. Phone screen was getting to know you questions, basic terminology, algorithm coding challenges, api/data design for sample app, questions about past experience/projects. On site was more of the same. Interviews are very collaborative and interviewer would often ask for clarification or modify the prompt a little to test how you react