1. Intro call with a recruiter.

2. Take-home coding task (took ±1h): to parse the department, course number, year, and season from various strings, e.g., "CS111 Fall 2016", "CS:111 16 F", etc.

3. Tech interview including coding: the interviewer expanded the previous task with a second part – if a user enters the same course (department + course number) from the previous task twice or more times, don't retrieve it in a result, plus sorting using two criteria: year and department if the years matched.

Questions:

"What do you know about Course Hero?"

"Tell me about your experience."

These are very common questions.

"How would you preprocess the data?"

This is a common question in a technical interview.