Quick and personal with both the assistant and general manager of said location. It was right outside of the kitchen and they asked simple questions about availability and who you are as a person.
Shack Member applicants have rated the interview process at Shake Shack with 2 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 66.9% positive. This is according to Glassdoor user ratings.
Here are the most commonly searched roles for interview reports -