SIG (Susquehanna) interview notes, page 3 of 7

“Took me a second to set up cleanly.” The rest of the author's notes on Software Engineer interview at SIG (Susquehanna), Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The setup sounds simple but I fumbled the direction signs at first.” The rest of the author's notes on Software Engineer interview at SIG (Susquehanna), Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I set it up as a Markov chain pretty quickly, which felt right.” The rest of the author's notes on Software Engineer interview at SIG (Susquehanna), Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I actually liked this one.” The rest of the author's notes on Data Scientist interview at SIG (Susquehanna), 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 basically a constraint satisfaction puzzle dressed up in a building metaphor.” The rest of the author's notes on Software Engineer interview at SIG (Susquehanna), 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 to 11 choose 5 and then realized that's wrong because the cookies of the same type are identical.” The rest of the author's notes on Software Engineer interview at SIG (Susquehanna), Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I set up variables pretty quickly: let p be paddling speed relative to water, so upstream speed is p-2 and downstream speed is p+2.” The rest of the author's notes on Data Scientist interview at SIG (Susquehanna), Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“You need P(X <= 2) where X is Binomial(5, 0.2).” The rest of the author's notes on Software Engineer interview at SIG (Susquehanna), Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The mechanics here are standard: delta is 0.05 * 42 = 2.1 minutes, then plug into n = 2 * ((z_alpha/2 + z_beta) / delta * sigma)^2.” The rest of the author's notes on Data Scientist interview at SIG (Susquehanna), 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 session lifecycle because that felt like the spine of the whole thing: open register, scan items, apply discounts, collect payment, close.” The rest of the author's notes on Software Engineer interview at SIG (Susquehanna), Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.