Met them at the campus career fair and received a 45-minute phone interview within a couple days. The phone interview was pretty good. One leetcode medium question and ample of time to ask questions and discuss their product. Got the on-site interview in a week or so and interviewed with the notifications team. Two technical interviews on data structures and algorithms + lunch with two engineers + one interview with the Engineering Manager. Overall good experience but the on-site team seemed disinterested as though they had already found a good candidate.

Spiral Matrix.