Walmart interview notes, page 10 of 14

“I talked through a few modeling options and landed on using lagged features from prior periods.” The rest of the author's notes on Data Scientist interview at Walmart, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I walked through the mechanics fine, splitting data into k folds, training on k-1, testing on the held-out one, rotating through.” The rest of the author's notes on Data Scientist interview at Walmart, 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 kind of question where you can go a dozen different directions and I wasn't sure which layer they wanted me to focus on.” The rest of the author's notes on Software Engineer interview at Walmart, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Pretty much the opener.” The rest of the author's notes on Product Manager interview at Walmart, Hiring Manager Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I kind of froze for a second because the setup feels absurd on purpose.” The rest of the author's notes on Product Manager interview at Walmart, Onsite - Product Sense / Strategy round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I started with the data model because that felt safest, shipment, address, carrier, label, tracking event.” The rest of the author's notes on Software Engineer interview at Walmart, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This is a lot to cover in one session.” The rest of the author's notes on Software Engineer interview at Walmart, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This one is deceptively wide.” The rest of the author's notes on Software Engineer interview at Walmart, Onsite - System Design / Architecture 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 even understand what they were asking.” The rest of the author's notes on Mobile Engineer interview at Walmart, 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 general answer but fumbled the vocabulary under pressure.” The rest of the author's notes on Data Scientist interview at Walmart, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.