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Updated weekly · Last refresh Oct 17

TikTok Shop Data Engineer Interview Questions

The questions to prepare for a TikTok Shop Data Engineer interview. Questions from real interview reports rank first. Updated daily.

17questions
~3htotal time
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1
CodingStart here. 3 questions · ~27 min
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsTikTok Shop
Spark, SQL, and Java BasicsMedium

Assesses your breadth of practical data engineering tooling and programming fundamentals.

javaleetcodesqlTikTok Shop
Longest Substring AlgorithmMedium

Tests your algorithmic problem-solving skills and ability to implement an efficient solution.

sqlpythonAlgorithmsTikTok Shop
2
SQL & Data Manipulation6 questions + 3 drills · ~85 min
Handling NULLs and Edge CasesMedium

Assesses robustness of analytical SQL logic under NULLs and tricky data conditions.

null valuesedge casesTikTok Shop
Choosing Join TypesMedium

Assesses understanding of SQL join semantics and selecting the right join for production workloads.

data relationshipsJoinsproduction environmentTikTok Shop
Transaction Trends Over TimeMedium

Tests ability to translate business questions into time-series SQL for analytics.

TikTok Shop
Your Data ProjectMedium
Practice
Practice drill

Use joins, aggregation, and a CTE to identify TikTok Shop sellers with at least two completed orders.

experienceJoinsData ManipulationTikTokTikTok Shop
Automating Manual ReportingMedium
Practice
Practice drill

Replace a manual Excel sales report with a repeatable SQL query for monthly seller performance.

process improvementJoinsExcelTikTok Shop
SQL for Business ScenariosHard
Practice
Practice drill

Calculate monthly TikTok Shop seller GMV, growth, ranking, and cumulative performance from order data.

Joinssql queriescomplex queriesTikTok Shop
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3
Behavioral & Leadership6 questions · ~55 min
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4
More topics2 questions · ~18 min
XGBoost OverviewHard

Explain XGBoost, its gradient boosting architecture, and how to productionize its training data pipeline.

Data Qualitydata pipelineMachine LearningTikTok Shop
Data Quality in PipelinesMedium

Tests your approach to ensuring reliable, accurate data in data engineering pipelines.

project experienceData QualityTikTok Shop

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The finish line: interview-readyComplete all 17 questions plus 3 hands-on drills to finish this plan.