1010data Data Engineer Interview Questions
The questions to prepare for a 1010data Data Engineer interview. Questions from real interview reports rank first. Updated weekly.
Use a hash map to find two array elements that sum to a target in O(n) time.
1010dataMerge two sorted arrays into one sorted array using a two-pointer linear scan.
1010dataReverse a singly linked list in place using pointer manipulation.
1010dataPreferred tools and patterns for data modeling and pipeline architecture in a modern data platform.
1010dataStructured approach to diagnose failures in an ETL integration, from source extraction through orchestration, data quality, and idempotent recovery.
1010dataApproach for handling missing data in an ML data pipeline, including validation, imputation, and safe downstream consumption.
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Explain how SQL and NoSQL differ in schema, consistency, scaling, and Demandbase-style analytics use cases.
1010dataTests your ability to reason from data quality and assumptions using 1010data-style analysis.
1010dataFind the top 10 products by total sales revenue using joins, aggregation, and a CTE.
RTX
iSmile Technologies
CatalinaAggregate monthly sales by product category and use LAG to calculate month-over-month changes.
Total Wine & More
Inc.
Benjamin MooreCompute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.
ADP