I've been handed off between four different recruiters throughout the process. I was told I passed the interview but am still waiting on an offer.

The System Design round also had no whiteboard/shared coding session, which I found odd.

Given a graph of nodes with directed edges, find a node that can reach every other node in the graph.

Given a sentence of words and a thesaurus of synonyms, return every possible version of the sentence (by substituting words for their synonyms).

System Design: How would you design an application that takes a picture of anything and returns its Amazon store details?

Object Oriented Design: Given a pizza with "size, toppings, and a base," how would you represent this "pizza" in code?