Technical Screen

Technical Screen with Bloom Filter and Payment Idempotency Debugging

MercorSoftware Engineer · Technical Screen · Oct 2026

Almost all of these were questions I had already seen in interview experience posts! Worst sorting algorithm: I talked about enumerating every permutation and checking whether each one is sorted. Coffee shop: A and B each buy two cups of coffee. What is the probability that A's two cups taste better than B's two cups? There are 1M user_ids. How do you efficiently check whether an id exists, and a…

Shared by a candidate · reported Oct 2026. Interview formats change; use it as a guide, not a script.