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Updated weekly · Last refresh Aug 30

Guidehouse Data Engineer Interview Questions

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

22questions
~3htotal time
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1
PipelinesStart here. 13 questions · ~104 min
ETL vs ELT Trade-offsEasy

Compare ETL and ELT, and explain when ELT is the better pipeline pattern.

ETLELTData ModelingGuidehouse
Incremental Loads with Delta LakeMedium

Tests practical implementation of incremental ingestion and change handling with Delta Lake.

delta lakeIncremental loaddatabricksGuidehouse
Cluster Resource Allocation in Shared DatabricksMedium

Tests ability to balance cost and performance while supporting multiple workloads.

databricksResource AllocationGuidehouse
Modeling for Power BI IntegrationMedium

Tests modeling choices that enable efficient BI consumption and reliable reporting.

dashboardspower biData ModelingGuidehouse
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2
SQL & Data Manipulation4 questions + 3 drills · ~62 min
Implement Type 2 Slowly Changing DimensionsHard

Tests change-data modeling for historical tracking and accurate analytics over time.

slowly changing dimensionssqlData ModelingGuidehouse
Star Schema for Financial TrackingMedium

Tests dimensional modeling skills for analytics-ready reporting.

fact tablesstar schemadimensionsGuidehouse
Optimize Slow Multi-Join SQLHard

Tests query optimization techniques and performance troubleshooting for complex SQL.

Performance TuningJoinssqlGuidehouse
Second Highest Without AggregatesHard
Practice
Practice drill

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-JoinsCredit GenieDevoteamCisco Restaurant + Bar
Second-Highest Client Transaction AmountMedium
Practice
Practice drill

Use a CTE, join, and dense ranking to return each client's second-highest distinct transaction amount.

Window FunctionsSubqueriesRankingThe AmeripriseTata Consultancy Services (North America)Wells Fargo
Contact Center Agent Performance MetricsHard
Practice
Practice drill

Compute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.

ETLAggregationsData ModelingADP
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3
Behavioral & Leadership5 questions · ~40 min
Mentor and Build Reusable FrameworksMedium

Tests leadership, knowledge sharing, and engineering practices that scale team productivity.

MentorshipteamworkGuidehouse
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The finish line: interview-readyComplete all 22 questions plus 3 hands-on drills to finish this plan.