Onemain financial Data Scientist Data Manipulation (SQL/Python) Interview Questions
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OneMain Financial
Medium
Data ScientistCount, Return, Find, and Select in SQL Queries
orders +----------+--------------+------------+--------+ | order_id | customer_id | order_date | amount | +----------+--------------+------------+---...
Data Manipulation (SQL/Python)
69
0
Jul 12, 2025
OneMain Financial
Medium
Data ScientistTransform clickstream with pandas sessionization
Given a pandas DataFrame events with columns [user_id:int, ts:str ISO8601 or NaT, url:str, server_log_ts:datetime], build 30-minute inactivity session...
Data Manipulation (SQL/Python)
0
0
Oct 13, 2025
OneMain Financial
Medium
Data ScientistWrite SQL for cohort retention and ARPU
Using PostgreSQL, compute monthly signup cohort D30 retention and 30-day ARPU. Cohort month = date_trunc('month', signup_date). D30 retention = users ...
Data Manipulation (SQL/Python)
0
0
Oct 13, 2025