PayPal interview notes, page 6 of 10

“My first instinct was to just simulate the swaps greedily and I wasted probably five minutes going down that path before realizing it doesn't work.” The rest of the author's notes on Software Engineer interview at PayPal, 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 the sample variance formula without asking which type they wanted, and the interviewer had to stop me to clarify.” The rest of the author's notes on Data Scientist interview at PayPal, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This was a beast of a question.” The rest of the author's notes on Data Scientist interview at PayPal, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The stakeholder part I handled fine, structured it as situation-action-result and talked about a time I pushed back on a product decision using funnel data.” The rest of the author's notes on Data Scientist interview at PayPal, Executive / Final Round round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I started with the happy path and got pretty far before they pushed on the compliance angle.” The rest of the author's notes on Software Engineer interview at PayPal, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Started strong on the basic TCP vs UDP stuff, reliability and ordering are easy, but then they pushed into congestion control and I got a bit fuzzy.” The rest of the author's notes on Software Engineer interview at PayPal, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This was a lot to unpack.” The rest of the author's notes on Data Scientist interview at PayPal, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I started with segmentation which felt right but I jumped to hypotheses way too fast without really confirming the metric definition first.” The rest of the author's notes on Product Manager interview at PayPal, 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 'more than once' part is what got me.” The rest of the author's notes on Data Scientist interview at PayPal, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I gave the textbook answer about probability under the null hypothesis and they pushed back asking what that means practically for a product decision.” The rest of the author's notes on Data Scientist interview at PayPal, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.