Based on 5 reported problems, Shopify interviews are in line with industry averages - 20% Hard vs 18% overall. The majority (60%) of questions are Medium difficulty, which is typical for companies that want to see solid fundamentals without excessive trick questions.
Compared to the industry average, Shopify puts unusual emphasis on doubly-linked-list (40% of problems, 20.9x the industry average), design (60% of problems, 10.4x the industry average), simulation (40% of problems, 9.3x the industry average). If you're short on time, these are the categories to double down on.
The most common topics are hash-table (60%), design (60%), simulation (40%), linked-list (40%). Problems below are sorted by frequency, the ones at the top are asked most often.