Meta interview notes, page 194 of 238

“Knew this one the second they said 'binary tree' and 'visible nodes'.” The rest of the author's notes on Software Engineer interview at Meta, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“My first instinct was brute force: try flipping every 0 and run BFS each time.” The rest of the author's notes on Software Engineer interview at Meta, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I leaned into live coordinates and activity patterns pretty quickly but forgot to tie in the social graph until they nudged me.” The rest of the author's notes on Data Scientist interview at Meta, Onsite - Product Sense / Strategy round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This one took me a minute to get my footing.” The rest of the author's notes on Data Scientist interview at Meta, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I went with watch time pretty quickly and then had to defend it against retention.” The rest of the author's notes on Data Scientist interview at Meta, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I started with WebSockets vs SSE and the interviewer let me run with it for a while, which felt like a good sign.” The rest of the author's notes on Software Engineer interview at Meta, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

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

“The part that trips people up is the scope check.” The rest of the author's notes on Software Engineer interview at Meta, Onsite - Behavioral / Leadership round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I went straight to a consumer app idea and spent too long on features before anyone asked me to.” The rest of the author's notes on Product Manager interview at Meta, Onsite - Product Sense / Strategy round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

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