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Merge interview questions

Explore questions associated with Merge. Review the source details, then use the workspace for code, notes, and diagrams.

8 questions in the library. A source association does not guarantee a future interview question.

Behavioral and leadership · Coding · System design

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8 questions

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System designMedium
Design a notification system
Async processing with durable queues, per-channel isolation, retries/DLQ, at-least-once + idempotency, outbox, priorities.
Companies: Merge, Airbnb, Amazon, Autodesk +24
async-processing · idempotency · outbox-pattern · queues
Last reported Sep 2026
Start AI interview Study workspace
CodingDifficulty not specified
Find Lowest Value in Array
Given an array of integers, return the smallest value in the array. Do not use built-in min/max functions.
Companies: Merge
Last reported Jul 2026
Open workspace
CodingMediumLeetCode 207
Course Schedule
Given courses as nodes and prerequisite pairs as directed edges, determine whether the directed graph is acyclic — return true if a topological ordering exists…

Companies: Merge, Amazon, Anduril, Cloudflare +6

Breadth-First Search · Depth-First Search · Directed Acyclic Graph · Graph Theory

Last reported Jul 2026

CodingDifficulty not specifiedLeetCode 791

Custom Sort String

Reorder string s to follow the custom precedence defined by string order: every character that appears in order must appear in s in that relative…

Companies: Merge, Meta

Last reported Jul 2026

CodingMediumLeetCode 236

Lowest Common Ancestor of a Binary Tree

Given a binary tree and two nodes p and q, find their lowest common ancestor (LCA) — the deepest node that has both p and…

Companies: Merge, Amazon, Apple, Atlassian +6

Binary Lifting · Binary Tree · Depth-First Search · Lowest Common Ancestor

Last reported Jul 2026

CodingDifficulty not specifiedLeetCode 559

Maximum Depth of N-ary Tree

Given the root of an n-ary tree, return its maximum depth — the number of nodes along the longest root-to-leaf path. This is a simple…

Companies: Merge, Apple

Last reported Jul 2026

CodingMediumLeetCode 417

Pacific Atlantic Water Flow

Given an m×n height grid where water can flow from a cell to any neighbor of lesser-or-equal height, return all coordinates from which water can…

Companies: Merge, Amazon, Meta, Pinterest

Last reported Apr 2025

Behavioral and leadershipDifficulty not specified

What project are you most proud of?

Companies: Merge, Adyen, Amazon, Anthropic +37

Last reported Apr 2025