Whatnot Software Engineer interview questions

“The scope felt manageable at first but the win detection logic is where I started second-guessing myself.” The rest of the author's notes on Software Engineer interview at Whatnot, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The base version was fine, stack-based, explained complexity, tested it.” The rest of the author's notes on Software Engineer interview at Whatnot, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Classic system design prompt but there's actually a lot hiding under the surface.” The rest of the author's notes on Software Engineer interview at Whatnot, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The punctuation rule is what trips people up.” The rest of the author's notes on Software Engineer interview at Whatnot, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Classic two-pointer problem once you see it, but I fumbled around for a bit thinking about just squaring everything and sorting after.” The rest of the author's notes on Software Engineer interview at Whatnot, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This was a meaty one.” The rest of the author's notes on Software Engineer interview at Whatnot, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This is the core question and it ate up most of the session.” The rest of the author's notes on Software Engineer interview at Whatnot, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Got the basic approach pretty quick: group actions by user, sort by timestamp, walk each user's sequence and insert into a trie while incrementing counts.” The rest of the author's notes on Software Engineer interview at Whatnot, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I knew the shape of the solution pretty fast: group by user, sort by time, build a trie, DFS print with indentation.” The rest of the author's notes on Software Engineer interview at Whatnot, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Pretty easy warmup.” The rest of the author's notes on Software Engineer interview at Whatnot, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.