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Updated weekly · Last refresh Sep 24

One Analytics Engineer Interview Questions

The questions to prepare for a One Analytics Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
SQL & Data ManipulationStart here. 4 questions + 3 drills · ~62 min
Clustered vs Non-Clustered IndexesMedium

Explain how clustered and non-clustered indexes differ in storage, lookup behavior, and query performance.

JoinsData WranglingOne
Normalization vs DenormalizationMedium

Assesses your understanding of data modeling tradeoffs for analytics performance and correctness.

normalizationOne
SQL for Data ScenariosMedium

Tests your ability to reason about edge cases and craft correct SQL for analytics.

assessmentOne
Optimizing Poorly Performing SQLHard

Tests advanced SQL tuning and performance diagnosis for large-scale workloads.

performancequery optimizationsqlOne
Second-Highest Transaction Amount QueryMedium
Practice
Practice drill

Find the second-highest distinct transaction amount using a subquery in PostgreSQL without LIMIT.

SubqueriesRankingsalaryCapgemini FSSBUFreechargeNPCI
7-Day Rolling DAU on FacebookMedium
Practice
Practice drill

Compute daily distinct active users and a 7-day rolling average using a CTE and window function.

ActivisionStripePyramid Consulting
Optimize SQL QueriesMedium
Practice
Practice drill

Optimize a PostgreSQL aggregation query by filtering early, reducing rows before joins, and returning qualifying active customers.

database optimizationperformanceindexesSofteamSSoftware Medical InformaticsGlassdoor
2
Behavioral & Leadership3 questions · ~24 min
Clarifying Conflicting Stakeholder RequirementsEasy

Tests stakeholder requirement gathering under ambiguity, with emphasis on communication, alignment, and turning conflicting input into clear requirements.

Stakeholder ManagementCommunicationOwnershipOne
Data Scenarios BrainstormMedium

Evaluates how you structure thinking and collaborate when requirements are unclear.

One
Navigating Data Engineering ChallengesMedium

Tests problem-solving under pressure and how you drive outcomes as a data engineer.

challengedata engineeringOne
3
More topics1 question · ~8 min
dbt-Only Pipeline PracticesMedium

Assesses practical dbt usage for analytics transformations and pipeline reliability.

One

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