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Updated weekly · Last refresh Oct 17

ByteDance Solutions Architect Interview Questions

The questions to prepare for a ByteDance Solutions Architect interview. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 6 questions · ~66 min
Reverse Linked ListEasy
Practice

Reverse a singly linked list iteratively and recursively in Python.

RecursionLinked ListsbasicsByteDance
Maximum Subarray SumEasy
Practice

Compute the largest sum of any contiguous subarray using Kadane's algorithm in O(n) time.

Dynamic ProgrammingArraysGreedyByteDance
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2
Pipelines3 questions · ~33 min
Integrate a New Microservice PipelineMedium

Approach for integrating a new microservice into an existing pipeline architecture with dependency management, idempotency, and data quality controls.

InfrastructureOrchestrationDependenciesByteDance
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3
System Design9 questions · ~98 min
Design Smart Message Delivery RankingHard

Design an ML driven message delivery and prioritization system for a large real-time messaging product.

Feature StoreRetrievalModel ServingByteDance
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4
Behavioral & Leadership9 questions · ~98 min
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5
More topics5 questions · ~55 min
SQL Top Spenders by MonthEasy
Practice

Rank TikTok Shop users by monthly spend using joins, aggregation, date truncation, and ROW_NUMBER().

Window FunctionsRankingAggregationsByteDance
Prioritize Features for a New ProductMedium

A framework for deciding which features should ship first when building a new product.

Feature PrioritizationUser Needsproduct developmentByteDance
Real-Time Scale Cost EstimateHard

Estimate monthly infrastructure costs for a real-time service serving 10 million daily active users.

Estimationanalytical thinkingTAM/SAM/SOMByteDance
7-Day Rolling Active UsersMedium
Practice

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

Window FunctionsDate FunctionsRunning TotalsByteDance
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Hands-on SQL practiceWrite and run real queries in the editor. 1 drill · ~10 min
The finish line: interview-readyComplete all 32 questions plus 1 hands-on drill to finish this plan.