Meta interview notes, page 88 of 238

“This one took me a while to wrap my head around because it's not just 'find the bug.' The query had a many-to-many join that was silently inflating row counts, and I almost missed it because the query actually ran fine.” 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 jumped straight into feature ideas without anchoring on users or problems first, which I knew was wrong the moment I said it out loud.” 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.

“My first instinct was standard BFS and I started coding before fully thinking through the chute mechanic.” The rest of the author's notes on Software Engineer interview at Meta, Onsite - Coding / Algorithms round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The core idea clicked fast: scan right to left, track the running max, any building taller than the current max makes the cut.” 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 went straight to features and had to walk myself back mid-answer.” 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.

“First thing I did was ask about equal elements because that felt like a trap waiting to happen.” 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 had an answer ready but it came out kind of rambly.” 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 started with a class and two hashmaps, one for accounts keyed by customer ID and one for transactions.” 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.

“They were serious about the complexity breakdown, not just a quick mention at the end.” 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 went straight to GMV and buyer conversion which felt right but I second-guessed myself halfway through and started tacking on engagement metrics that didn't really belong.” 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.