Coinbase interview notes, page 12 of 21

“The basic case is easy, just increment the last element.” The rest of the author's notes on Data Scientist interview at Coinbase, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The empty state and loading spinner are the easy part.” The rest of the author's notes on Frontend Engineer interview at Coinbase, Take-home Assignment round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The 'messy' part is real.” The rest of the author's notes on Machine Learning Engineer interview at Coinbase, 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 decomposing revenue into volume and price components, which felt right, but I didn't immediately jump to traffic, conversion, and average order value as separate levers and I think that cost me some points early on.” The rest of the author's notes on Data Scientist interview at Coinbase, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I structured my answer as situation-action-result and picked a project where we had a real dependency conflict with an infra team.” The rest of the author's notes on Software Engineer interview at Coinbase, Onsite - Behavioral / Leadership round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The first part felt fine.” The rest of the author's notes on Data Scientist interview at Coinbase, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Got through the core flow okay.” The rest of the author's notes on Software Engineer interview at Coinbase, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Knew immediately this was a window function thing but second-guessed myself and started writing a self-join first.” The rest of the author's notes on Data Scientist interview at Coinbase, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This thing kept growing.” The rest of the author's notes on Software Engineer interview at Coinbase, 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 similarity logic and it felt clean enough, group ratings by user, then for each movie the target user rated highly, find others who also rated it highly.” The rest of the author's notes on Software Engineer interview at Coinbase, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.