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Updated weekly · Last refresh Aug 30

Demandbase Data Engineer Interview Questions

The questions to prepare for a Demandbase Data Engineer interview. Questions from real interview reports rank first. Updated weekly.

36questions
~5htotal time
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1
SQL & Data ManipulationStart here. 4 questions + 2 drills · ~54 min
Top Customers by Sales RevenueEasy
Practice

Use GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.

RankingGroup ByAggregationsDemandbase
SQL vs NoSQL for Go-to-Market DataEasy

Explain how SQL and NoSQL differ in schema, consistency, scaling, and Demandbase-style analytics use cases.

JoinsData WranglingDemandbase
PostgreSQL vs Aurora InternalsHard

Assesses deep database knowledge and how engine internals impact production performance and resilience.

JoinsData WranglingAggregationsDemandbase
SQL Joins and AggregationsMedium
Practice
Practice drill

Join policy and ISO ClaimSearch claim data to aggregate claim counts and incurred losses by state and policy type.

JoinsGroup ByAggregationsDemandbaseAlign TechnologyVerisk Analytics
Top Customers by Closed-Won SalesEasy
Practice
Practice drill

Find the top five customers by closed-won sales using joins, aggregation, and ordering in PostgreSQL.

RankingGroup ByAggregationsDemandbase
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2
Pipelines18 questions · ~151 min
Data Warehousing in PipelinesEasy

Explain what a data warehouse is and why it matters in analytics pipelines.

InfrastructureETLData ModelingDemandbase
Backfilling Missing Pipeline DataMedium

Approach for safely backfilling missing data while preserving correctness, idempotency, and data quality.

ETLQualityDemandbase
Design CI/CD for Data PipelinesMedium

Design a CI/CD system for Airflow, dbt, Spark, and Kafka pipelines with automated testing, staged releases, rollback, and SOX-compliant auditability.

InfrastructureToolsOrchestrationDemandbase
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3
Coding6 questions · ~50 min
Time Complexity in Data ProcessingEasy

Tests your ability to analyze algorithm efficiency and apply it to real data processing workloads.

Hash TablesSearchingSortingDemandbase
Breadth Across Data Engineering TopicsHard

Assesses your breadth across data engineering fundamentals and advanced tasks like deduplication and linkage.

distributed computingdata engineeringDemandbase
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4
Behavioral & Leadership8 questions · ~67 min
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The finish line: interview-readyComplete all 36 questions plus 2 hands-on drills to finish this plan.