Serialize and deserialize a binary tree.
SeniorHard◆ Commonly asked
#tree#dfs
Senior backend interview. Coding-heavy early, design and behavioral later.
The loop · 6 rounds
Round 01 · 3 questions
Data structures & algorithms on a whiteboard or shared editor.
Round 02 · 2 questions
Build a working component or service under time pressure.
Round 03 · 2 questions
High-level architecture of a large-scale system.
Round 04 · 3 questions
Deep questions on your core stack and fundamentals.
Round 05 · 1 question
Scope, ownership, and role-fit discussion with the manager.
Round 06 · 2 questions
Values, collaboration, and past-experience (STAR) questions.
◆ This experience is composed from commonly reported questions for this role and level. Real, individually-shared interviews will be layered in over time.