In progressTechnical Screen

A 45-Minute Phone Screen Building a URL Shortener

CoinbaseSoftware Engineer · Technical Screen · Aug 2025

Sharing my backend phone screen with Coinbase. The process was a recruiter call, then the phone screen got scheduled about a week later, 45 minutes long. The question was to build the core logic of a URL shortener service, with the following requirements: Support generating short links Support automatically redirecting when a short link is visited Short links need an expiration time Concurrent ac…

Shared by a candidate · reported Aug 2025. Interview formats change; use it as a guide, not a script.