Two levels of interview:

Round 1: React and DSA questions. In React, some questions required filling in missing logic for given components. For DSA, I was asked the LRU cache problem.

Round 2: Design system. Questions started from DNS, security, CDN, cookie handling, and complete web application architecture from the browser to backend storage. This involved load balancers, caches, and data transfer mechanisms like WebSockets and long polling. Some questions presented a specific feature, and I had to explain its functional requirements on both the frontend and backend. Examples include: What data do you get from the user? How would your frontend look? Which method is efficient for transferring data from frontend to backend, and why? How can you store data in a table and in what relational order? They also asked about the backend concerning architecture and feature concept explanation.

Round 1: React and DSA.

In React, there was a question where you needed to fill in missing logic for a given component. For DSA, they asked for the LRU cache problem.

Round 2: Design System.

Questions started with DNS, security, CDN, and cookie handling. Then, they moved to complete web application architecture, from the browser to backend storage. This involved load balancers, caches, and data transfer mechanisms like WebSockets and long polling. Some questions involved a specific feature where you had to explain its functional requirements on both the frontend and backend. For example, what data you get from the user, how the frontend would look, which method is efficient for transferring data from frontend to backend and why, and how to store data in a table with a proper relational order. They also asked about backend concepts when discussing architecture and feature explanations.