Wix Coding Interview Questions
25 Wix coding interview problems with full optimal solutions — 16 easy, 7 medium, 2 hard. Every problem ships with multiple approaches (brute-force first, then the optimal), complexity tables for each, company-specific tips on what an Wix interviewer values, and a FAQ section.
Showing 2 problems of 25
- #24hardfoundational
24. Serialize and Deserialize Binary Tree
Convert a binary tree to a portable string and restore it exactly — Wix stores the entire site element tree as a serialized document, so this problem directly exercises the persistence and hydration logic at the heart of their editor.
- #25hardfoundational
25. Flatten Nested List Iterator
Build a lazy iterator over an arbitrarily nested list structure — Wix's element hierarchy is a nested document tree, and this problem tests whether you can traverse it on-demand without materialising the full flat list, which matters for large pages.