I read the past several months of Glassdoor engineering reviews to prepare. It was very helpful, and there were no surprises. It is a deliberate process, and some of that you can control by when you schedule the next round. I wanted some time to prep before each step, so it took around 5 weeks total.

From the very first contact with the recruiter, the communication was excellent. After each round, they were very good about preparing me for what was up next. Also, their candidate portal, which you get access to during the process, is a great resource for all rounds. All of the interviewers were helpful and very pleasant.

• First round was a standard coding challenge in the language of your choosing. Mine involved working with arrays and string manipulation.
• Second round was a "life story." A pleasant conversation about mostly work history with some personal elements. Like others have said on here, this conversation is mostly driven by you, so you determine what to highlight from your professional/personal history and what is not important.
• Final round consisted of three 1.5-hour segments: two coding challenges and the deep dive. I prepared quite a bit for the deep dive and came ready to whiteboard, but ended up not needing to. The coding challenges were fairly straightforward, and the interviewers were helpful to answer questions and provide guidance. The challenges take place on your computer while sharing your screen, so having the dev environment for both challenges set up ahead of time is helpful. It is a long day, but it goes by fast. They also provided lunch via a meal delivery app coupon, which they didn’t have to do but was a nice touch.

Write a program to validate a string based on a given definition.