I applied online and was contacted for lengthy introductory discussion about past projects and interest/passion. Next, had a on-site with multiple team members. Behavioral discussion with founder, high level technical discussion with an engineer, live coding algorithm challenge with front end engineer, virtual coding challenge (create a program similar to creating an ATM program inputs are user interaction, outputs cash etc) with a remote engineer, and informal discussion with non-engineering team. They have a wide range of tech stack and technical challenges.