Reddit interview notes, page 5 of 6

“The 'where do you track it' part is what they actually care about.” The rest of the author's notes on Machine Learning Engineer interview at Reddit, Technical Phone Screen 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 Machine Learning Engineer interview at Reddit, 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 took longer than I thought it would.” The rest of the author's notes on Machine Learning Engineer interview at Reddit, 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 idea pretty fast: keep two pointers, one crawling odd nodes and one crawling even, then stitch the even chain onto the end of the odd chain.” The rest of the author's notes on Machine Learning Engineer interview at Reddit, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Spent the first few minutes trying to figure out whether they wanted an MLE answer or a PM answer.” The rest of the author's notes on Machine Learning Engineer interview at Reddit, Onsite - Product Sense / Strategy round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The open-endedness was the hard part.” The rest of the author's notes on Software Engineer interview at Reddit, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Seems straightforward but the interesting part is figuring out how you're supposed to know who was added first.” The rest of the author's notes on Software Engineer interview at Reddit, 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 a queue-per-key approach, storing timestamps and evicting anything outside the window on each call.” The rest of the author's notes on Software Engineer interview at Reddit, 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 an incident from a model rollout that caused some downstream noise in a recommendation pipeline.” The rest of the author's notes on Machine Learning Engineer interview at Reddit, Onsite - Behavioral / Leadership round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Every time I try to answer this I end up listing tools like I'm reading off a spec sheet.” The rest of the author's notes on Machine Learning Engineer interview at Reddit, Onsite - Behavioral / Leadership round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.