Glean Data Scientist Interview Questions
Master your tech interview with our curated database of real questions from top companies.
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Glean
Easy
Data ScientistReason about MAU error after user ID rehash
A product tracks activity using user_id from login events, and computes MAU as: - MAU (L30D) on date d = number of distinct user_id with at least one ...
Analytics & Experimentation
0
0
Nov 10, 2025
Glean
Easy
Data ScientistCompute DAU and rolling MAU with zero days
You have two tables in PostgreSQL: Tables users - user_id (STRING / INT, PK) - signup_date (DATE) logins - user_id (STRING / INT, FK → users.user_id) ...
Data Manipulation (SQL/Python)
0
0
Nov 10, 2025