ByteDance Backend Engineer Interview Questions

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

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Binary Search on Complex Data

Medium

Assesses algorithmic thinking and performance considerations for searching large datasets.

binary searchSearchingAlgorithms

ByteDance

Priority Queue From Scratch

Medium

Assesses data structure implementation skills and correctness under edge cases.

priority queueData Structuresimplementation

ByteDance

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Java Deadlock Handling

Medium

Evaluates concurrency fundamentals and practical deadlock mitigation strategies.

multithreadingjavadeadlock

ByteDance

gRPC vs REST Trade-offs

Medium

Evaluates API and RPC design judgment for backend service communication.

rest

ByteDance

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Optimizing Slow Sales QueriesEasy

Explain how to diagnose and optimize a slow SQL query using execution plans, indexing, and simpler query patterns.

JoinsData WranglingAggregations

ByteDance

Design Feed Database Schema

Hard

Tests data modeling skills for high-throughput social feed workloads at ByteDance.

schema designdatabase

ByteDance

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Caching Strategy Implementation Challenge

Medium

Assesses practical experience with caching design, correctness, and performance trade-offs.

Problem Solvingcachingstrategy

ByteDance

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Database Sharding StrategiesHard

Assesses data partitioning approaches and operational considerations for scaling databases.

distributed systemsscalability

ByteDance

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