Atlassian vs MongoDB Interview Questions
Atlassian lists 62 LeetCode interview questions while MongoDB lists 24. They share 6 problems — 10% of Atlassian's bank and 25% of MongoDB's. Focus on the overlap first, then drill into 56 Atlassian-only and 18 MongoDB-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 6 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Atlassian and MongoDB.
Step 2 — Company-specific depth: Add Atlassian-specific problems like Rank Teams by Votes, All O`one Data Structure, Design Snake Game and MongoDB-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: MongoDB skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
6 Shared Questions
High-priority problems to practice for both Atlassian and MongoDB.
| Problem | Difficulty |
|---|---|
| Stock Price Fluctuation | Medium |
| Merge Intervals | Medium |
| Lowest Common Ancestor of a Binary Tree | Medium |
| Text Justification | Hard |
| Lowest Common Ancestor of a Binary Tree III | Medium |
| LRU Cache | Medium |
Unique to Atlassian (56)
Problems in Atlassian's list that do not appear at MongoDB.
Unique to MongoDB (18)
Problems in MongoDB's list that do not appear at Atlassian.
| Problem | Difficulty |
|---|---|
| Word Break | Medium |
| Implement Trie (Prefix Tree) | Medium |
| Snapshot Array | Medium |
| Intersection of Two Arrays | Easy |
| Merge k Sorted Lists | Hard |
| Convert JSON String to Object | Hard |
| Insert Interval | Medium |
| Web Crawler Multithreaded | Medium |
| Course Schedule II | Medium |
| Merge Two Binary Trees | Easy |
| Sliding Window Maximum | Hard |
| Design Search Autocomplete System | Hard |
Frequently Asked Questions
How many LeetCode questions do Atlassian and MongoDB share?
Atlassian and MongoDB share 6 LeetCode interview questions. 56 problems appear only in Atlassian's list and 18 appear only in MongoDB's list.
What topics overlap most between Atlassian and MongoDB?
The most common shared topics between Atlassian and MongoDB are Hash Table (3 shared questions), Design (2 shared questions), Array (2 shared questions), Tree (2 shared questions), Binary Tree (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Atlassian or MongoDB?
Atlassian has 6 Easy, 42 Medium, and 14 Hard questions. MongoDB has 3 Easy, 15 Medium, and 6 Hard questions. MongoDB has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Atlassian and MongoDB?
Start with the 6 shared problems since they cover what both companies ask most often. Then add 20 Atlassian-specific and 18 MongoDB-specific questions to round out your prep.