ByteDance OA Questions 2024: What Candidates Actually Saw
Last updated: May 2026
8+ ByteDance online assessment questions reported by candidates who took the OA in 2024. Sourced from 1Point3Acres, LeetCode, Blind, Glassdoor, and Reddit. Data grows as new reports are added.
ByteDance OA Format in 2024
The ByteDance online assessment has followed a consistent format across multiple hiring cycles. Based on 2024 reports in the database, candidates typically see 2 to 3 algorithmic coding problems delivered through a proctored online platform (most commonly HackerRank). Some roles include additional behavioral or work-simulation components after the coding section.
Time limits reported by candidates range from 70 to 110 minutes for the full assessment. The coding problems are auto-graded, so edge case handling and runtime efficiency both matter. Partial credit is available on some platforms if your solution passes a subset of test cases.
Real ByteDance OA Questions from 2024
TikTok OA Very Hard SDE Longest Concave Subsequence
Longest Concave Subsequence: A concave subsequence is a subsequence where the first and last elements are greater than all other elements in between. For example, [100, 0, 25, 11, 200] is...
TIKTOK SWE-ML
skipped OA because recruiter. 1st phone screen: ask in depth about every projects and technologies you have done. - django project: whats django, whats the DB behind, what kind of API is it. -...
TikTok Frontend Interview - rejected
1) 30 min recruiter call. After that, received a Hackerrank live coding link via mail. 2) First technical round: \t5 min - Introductions \t25 mins - Implement JS throttling function \t25 mins -...
TikTok OA Backend Software Engineer 2024
TikTok Viral Challenge In the competitive world of social media, especially on platforms like TikTok, creators are constantly battling to produce viral content. The stakes are high-every video segment counts. As...
TikTok | OA | Maximise profit from strategy
Hello all, I would like to ask for help regarding an OA question I did recently. I think it\'s a sliding window problem, but I couldn\'t get by all test...
TikTok || OA question
A concave subsequence is a subsequence where the first and last elements are greater than all other elements in between. For example, [100, 0, 25, 11, 200] is concave, while...
TikTok | OA | 11/03/2024
Choose the correct Answer 1. Implementing a Real-Time Operating System (RTOS) TikTok is developing an embedded system that requires a real-time operating system (RTOS) to ensure timely task execution. Which RTOS feature is...
TikTok | OA | Rearrange Students
EDIT: Thanks to everyone who helped! CodeMaster18\'s comment has helped me solve it Hey all, got this question in an OA and couldn\'t get past it. Curious to see how it...
Topic Breakdown (2024 OA)
Topics reported by candidates who took the ByteDance OA in 2024:
Difficulty Breakdown (2024 OA)
1
hard
Difficulty labels are reported by candidates or inferred from LeetCode ratings.
How to Prepare for the ByteDance OA
The ByteDance OA is a timed, auto-graded coding test. Preparation is different from interview prep: you need to optimize for both correctness and speed, since partial credit requires passing test cases, not just showing reasoning.
- Practice timed sessions. Set a timer for 35 to 45 minutes per problem and simulate the real constraint.
- Focus on the topic clusters that appear most in ByteDance OA reports: dynamic programming, graphs, arrays, and strings make up the majority of reported problems.
- Read the problem constraints carefully before writing code. The constraints often reveal the expected time complexity and algorithm type.
- Use the LeakCode database to review 2024 OA questions from actual candidates. Pattern recognition across multiple sightings is a stronger prep signal than any single mock problem.
- If the OA includes a work simulation section, practice under realistic conditions. This section tests judgment and values alignment, not coding ability.
FAQ
What does the ByteDance OA look like in 2024?
Based on 2024 candidate reports, the ByteDance OA typically includes 2 to 3 coding problems and runs 70 to 110 minutes. Topics lean toward dynamic programming, graphs, arrays, and strings. Some roles include a work simulation section after the coding component.
How long is the ByteDance OA?
Most candidates report 70 to 90 minutes for the coding component. Roles with additional work simulation sections extend the total time to 110 to 150 minutes. Check your invitation email for the exact time allocation for your specific role.
What platform does ByteDance use for the OA?
ByteDance uses HackerRank or its own proprietary platform depending on the role and hiring cycle. Your invitation will specify the platform. Both platforms support multiple languages including Python, Java, C++, and JavaScript.
Are these real ByteDance OA questions?
Yes. All questions in the LeakCode database come from candidate reports on 1Point3Acres, Blind, Glassdoor, Reddit, and LeetCode. They are not AI-generated. Each question links to its source where available.
Other ByteDance OA Years
Related: ByteDance OA Hub · ByteDance All Questions · All OA Questions · Data Sources