Amazon interview notes, page 73 of 159

“I know K-means cold, or so I thought.” The rest of the author's notes on Machine Learning Engineer interview at Amazon, 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 prefix/postfix trick going in, which helped, but the no-division constraint still trips people up if they haven't seen it before.” The rest of the author's notes on Software Engineer interview at Amazon, Onsite - Coding / Algorithms round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The strategies ranged from things like rolling back the change and retesting from scratch, to spot-checking a subset and just shipping it, to writing new targeted unit tests.” The rest of the author's notes on Software Engineer interview at Amazon, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I fumbled the opening on this one.” The rest of the author's notes on Software Engineer interview at Amazon, Onsite - Behavioral / Leadership round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I jumped straight to hashing, which felt right, but I didn't think through the multi-file case fast enough.” The rest of the author's notes on Software Engineer interview at Amazon, 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 cross-entropy for classification and MSE for regression tasks, then moved into stuff like focal loss for class imbalance and IoU-based losses for object detection.” The rest of the author's notes on Machine Learning Engineer interview at Amazon, 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 the BFS queue and dedup set, which went fine.” The rest of the author's notes on Software Engineer interview at Amazon, Onsite - Coding / Algorithms round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I knew prefix sums were the move but fumbled explaining why you binary search instead of just scanning linearly.” The rest of the author's notes on Software Engineer interview at Amazon, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Jumped straight into defining a Publisher and Subscriber interface, which felt right, but I fumbled when they pushed on how you'd handle multiple topics and fan-out.” The rest of the author's notes on Software Engineer interview at Amazon, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Passed 10 of 15.” The rest of the author's notes on Software Engineer interview at Amazon, Online Assessment (OA) round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.