Instacart Software Engineer Data Manipulation (SQL/Python) Interview Questions
Master your tech interview with our curated database of real questions from top companies.
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3 Questions 1 Company
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Instacart
Medium
Software EngineerPivot transactions by date without date libs
Given a stream of transaction rows (shopper_id, date_str, amount) where date_str is ISO format 'YYYY-MM-DD', produce a pivoted report for a specified ...
Data Manipulation (SQL/Python)
0
0
Sep 6, 2025
Instacart
Medium
Software EngineerPivot data without date libraries
Transform a tall dataset into a wide, pivoted view without using any date/time libraries. Input: a list of records (date, store_id, metric, value) whe...
Data Manipulation (SQL/Python)
0
0
Jul 31, 2025
Instacart
Medium
Software EngineerImplement a pivot table transformation
Given a dataset of transactions with columns: user_id (string), category (string), subcategory (string), amount (float), ts (ISO timestamp), implement...
Data Manipulation (SQL/Python)
0
0
Jul 15, 2025