I applied through the online system and heard back within a week.
The first round interview was a written case interview. 30 mins were given to look it over, you then had 7 mins to present your conclusion, and the interviewer had 8 mins to ask you questions about your conclusion and your reasoning.
Interview questions [1]
Question 1
It turns out that your recommendation will exceed the plant's production capacity, what do you plan on doing about this?