GitLab Data Engineer Interview Questions
The questions to prepare for a GitLab Data Engineer interview. Questions from real interview reports rank first. Updated daily.
Use GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.
GitLabExplain OLTP vs OLAP designs, including schema shape, workload patterns, and when each is appropriate in a data platform.
GitLabExplain how to tune a slow PostgreSQL query that joins several large transaction tables using indexes, join strategy, and partitioning.
GitLabCalculate GitLab Premium user week-over-week retention using joins, CTEs, date bucketing, and the LEAD window function.
GitLabAggregate monthly sales by product category and use LAG to calculate month-over-month changes.
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Benjamin MooreSet up pipeline monitoring and alerting that catches critical failures quickly while limiting noisy alerts.
GitLabDesign a real-time event pipeline that can handle millions of events per second with sub-second latency.
GitLabApproach for handling missing data in an ML data pipeline, including validation, imputation, and safe downstream consumption.
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Tests your learning habits and commitment to improving data engineering skills.
GitLabTests coding ability for data quality logic and algorithmic correctness.
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