The interview process was smooth and without any excesses.

1. Online test in HackerRank. There were two tasks to ensure that my JavaScript coding skills were acceptable. They were quite easy.

A few days after submitting these tasks, I got an invitation to their office for the interview. There were three 1-hour interviews:

1. Web Architecture questions. Some questions about my past experience, the challenges I faced, and how I solved them. They also asked about REST, WebSockets, functional programming, etc.

2. JavaScript and Algorithms. Firstly, we had a conversation about React patterns and TypeScript. Then, I was asked to solve two DS/Algorithmic problems on a whiteboard (BST and binary search).

3. Behavioral / System Design. The part I completed the worst because I was not really prepared for it. Some tricky questions like, "What would you do if a manager asks you if you can start a new project right now? You have 5 minutes to think." I started to tell weird things, and I believe I frustrated them. Completely my fault.

Finally, I haven't received any feedback about my interview, even a 'no offer' message.

What would you do if a manager asks you if you can start a new project right now? You have 5 minutes to think.

Find a node with a specific value in the Binary Search Tree. What is the complexity of your solution?

Given an array of unique sorted numbers, find out if there is an array's value that matches its index.