Take-Home Optimization Then Three Onsite Rounds in One Day

First I talked with the recruiter, then they gave me a take-home with one week to finish. The take-home was optimizing a benchmark testing setup — there's a POST endpoint and a GET endpoint, using S3 as the database. The version they hand you originally reads the whole JSON out every time and uses string find to look for the offset. The overall speed of the POST was about 20+ seconds, and the goa…

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