I applied through university. I interviewed at Groupon
Interview
Applied through info session on campus. Got contacted after half a week. Had two 45-min back-to-back sessions campus interview. One with a senior engineer discussing my experience listed on resume and solving 2-3 problems w/ pseudocode. The other was with two engineers solving two whiteboard coding problems.
Interview questions [1]
Question 1
A matrix with integers. Mask all rows and columns containing 0's to 0 and keep the rest unchanged.
I applied through university. The process took 2 weeks. I interviewed at Groupon (Dublin, Dublin) in Jan 2022
Interview
It had 2 interviews -> 30 mins each.
First one, there were 2 interviewers. I got 3 coding questions with few db related questions as well. Pretty straight-forward.
Second 30 min interview had 2 interviewers as well. They were more focused on what you did in your previous job and the learnings out of both work and college related projects. Few behavioral questions.
Interview questions [1]
Question 1
1. Given a number n, find the sum of the numbers within n that are multiples of 3 and 5.
2. Given a string that contains a sentence, check whether the entire string is a palindrome.
3. Given two interfaces, write code to access data across those interfaces.
DB-related Questions.
1. When do you use joins and nested sub-queries.
2. How to handle/debug long-running queries.