ByteDance interview questions

Showing 151–160 of 160 results

• Solve interval merging and histogram areaMedium

  This question evaluates algorithmic problem-solving skills focused on interval manipulation and histogram-based area computation, emphasizing data structures, ordering, and reasoning about time and space complexity.

  ByteDanceSoftware EngineerCoding & AlgorithmsTechnical Screen
• Sort Every Concentric Matrix Border ClockwiseMedium

  Sort the values on every concentric border of a rectangular matrix and write them back clockwise from each border's top-left cell. Traverse corners exactly once, preserve interior layer boundaries, handle single-row or single-column centers, and leave the input unchanged.

  ByteDanceSoftware EngineerCoding & AlgorithmsOnline Assessment
• Split n People Into Two Groups So No Pair Who Dislike Each Other Shares a GroupHard

  Given n people and a list of pairs who dislike each other, decide whether everyone can be divided into two groups of any size so that no disliking pair shares a group. The problem tests reasoning about pairwise constraints, people with no constraints, and a solution that runs in time linear in the number of people and pairs.

  ByteDanceSoftware EngineerCoding & AlgorithmsTechnical Screen
• TCP vs UDP: Key Differences and the Applications That Suit EachMedium

  From a TikTok backend intern interview: compare TCP and UDP, including connection setup, reliability, ordering, flow and congestion control, message boundaries and overhead, and explain which applications suit each protocol. It tests tying transport-layer guarantees and their costs to real application needs.

  ByteDanceSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Tell Me About a Challenge You Faced at Work and How You Worked Through ItHard

  A behavioral question from a one-hour software engineering phone screen asks you to describe a challenge you faced and how you handled it. It tests whether you can pick a story with real stakes, make your own decisions and reasoning clear, report a concrete result, and reflect on what you would change, all within a few minutes.

  ByteDanceSoftware EngineerBehavioral & LeadershipTechnical Screen
• Tell me about your fitMedium

  Prepare a TikTok PM career-story answer covering self-introduction, role fit, Company A ownership, project deep dive, job changes, moving to the United States, long-term PM goals, relocation flexibility, metrics, and ecosystem product judgment.

  ByteDanceProduct ManagerBehavioral & LeadershipTechnical Screen
• Trace and Debug Agent Tool-Call FailuresMedium

  Design a distributed observability and tracing system to monitor, debug, and diagnose multi-step agent tool-call failures across retries and execution stages without leaking sensitive data.

  ByteDanceSoftware EngineerSystem DesignTechnical Screen
• Triage a Suddenly Slow Production ServiceEasy

  This question tests your structured approach to incident response and root cause analysis in a distributed production environment.

  ByteDanceSite Reliability EngineerSoftware Engineering FundamentalsTechnical Screen
• Validate Matching BracketsEasy

  Tests stack-based parsing fundamentals, early mismatch detection, and linear-time string validation for balanced bracket sequences.

  ByteDanceSite Reliability EngineerCoding & AlgorithmsTechnical Screen
• Write the Cross-Entropy Loss and Compute Precision, Recall and F1Medium

  An ML fundamentals question in two parts: write the cross-entropy loss for binary and multi-class classification and explain why it is used, then compute precision, recall, F1 and accuracy for a described imbalanced classifier. It tests exact formulas, careful arithmetic and metric choice.

  ByteDanceApplied ScientistMachine LearningTechnical Screen