Call with the hiring manager, discussing company culture, the team being hired for, and asking general questions about technical experience.

A choice of an online technical screen, a take-home challenge, or an extended on-site interview was offered. I chose the online technical screen, which was approximately one hour of "whiteboard" coding on a browser IDE with an engineer. The problem was an algorithm question followed by performance/use case questions, with a twist in requirements added at the end that required a slight redesign. The session was language-agnostic and very casual. Use of Google for syntax lookup or whatever else was expressly allowed upfront.

This was followed by a full-day "on-site" interview. There was no coding portion during this on-site, but I suspect there would have been if I had opted out of the previous tech screen. Over the course of the day, there were approximately six interviews.

• One was a project walkthrough, in which I gave a deep-dive presentation then discussed technical/implementation process details of a past project.
• Two were System Design interviews where I had to whiteboard the systems that would power a specific service, and design the endpoints/response shape.
• The rest were general technical background interviews and culture-based conversations.

Design an API that would power a Venmo-like application where users can send each other money.

Design a system that allows users to make payments to a bank at any time, even when the bank is only open a few hours a day.

Write an algorithm to determine if two strings are anagrams of each other.