practice a little every day, paws crossed ♡

Frontend Engineer Interview Questions

Practice 9403 coding, system design and machine learning questions from 546 companies, sorted by role, topic and interview round. Every question has step-by-step hints, a code runner that supports 8 languages and an AI mentor; members also get the full solution walkthrough.

9403
Questions: 546
Companies: 11
Topics: 8
Languages

Showing 1–5 of 5 results

AmazonMediumFrontend Engineer
Format a Forest of Nested Comments
This problem tests your ability to reconstruct hierarchical relationships from flat input data and format them into a visual tree representation with specific character-based connectors.
Coding & AlgorithmsOnsiteRecursionTree TraversalString Formatting
GoogleHardFrontend Engineer
Count Islands with Diagonal Connectivity
Practice counting binary-grid components when diagonal neighbors connect, changing the usual four-direction island definition.
Coding & AlgorithmsOnsite
RobinhoodMediumFrontend Engineer
Build a Weekly Calendar
This question evaluates frontend UI engineering skills, focusing on interactive interface construction, event handling, and state modeling to maintain a single source of truth for events in a weekly calendar grid, and it belongs to the web frontend development and UI/state-management domain.
Coding & AlgorithmsOnsite
VerkadaMediumFrontend Engineer
Implement a recency cache and min-coins DP
This problem tests your ability to combine a Least Recently Used (LRU) cache mechanism with a dynamic programming approach for optimization.
Coding & AlgorithmsOnsiteHash MapDoubly Linked ListDynamic Programming
WaymoMediumFrontend Engineer
Filter Matching Subtrees from an N-Ary Tree
This problem tests tree traversal techniques, string matching, and the ability to handle iterative tree processing to avoid stack overflow in deep structures.
Coding & AlgorithmsOnsiteTreesN-ary TreeAlgorithms