The interview process started with a 15 min technical call with the recruiter, who asked basic JavaScript questions. I would recommend studying JS's built-in data structures and their associated functions (i.e., map, forEach, reduce for an array).

The recruiter scheduled the next phone interview (45 min technical with an engineer) shortly after. You can look at the other interviews to get a sense of the question difficulty/subject. I was asked to design a class with some member functions that required JS concepts such as closure and callbacks. It seemed they are really looking if you can write idiomatic JavaScript quickly and nearly bug-free. After the phone interview, I was contacted for an onsite interview.

The onsite consisted of 3 interviews (2 technical with engineers, 1 behavioral/technical with an engineering manager). The first interview was a LeetCode-style problem with a front-end slant. I was unable to complete the code but made significant progress. The second interview was less algorithm-focused and more domain knowledge. This interview ended up being my favorite, as we got to touch on many topics in front-end development, which gave me a chance to demonstrate my experience. The third interview was with an engineering manager. The first half was behavioral, where I was asked about my background, motivation, and previous experience. The second half was a technical question about CSS.

A couple of days later, my recruiter contacted me and said that I would be having a final 45-minute technical interview over the phone. I was asked a LeetCode-style question, and after completing it, was asked to optimize a snippet of code. A few days later, my recruiter called and told me I had an offer.

Why Facebook?