High-Bar Technical Screen, Rejected Over Spark and C#

Cognitiv is a small startup that works with ads data. They were opening a new office in Canada, so they were hiring. After the recruiter interview, the first round was scheduled with the hiring manager. They asked BQ questions along with technical experience questions related to what the team needed — things like how to handle data duplication, Spark-related questions, how to scale data... If you…

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