MongoDB Online Assessment Questions
We hold no confirmed online assessment reports for MongoDB so far. Below are its 6 closest coding and technical questions, which is what an OA draws from.
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MongoDB Coding & Technical Questions
#208 Implement Trie (Prefix Tree)
LeetCode #208: Implement Trie (Prefix Tree). Difficulty: Medium. Topics: Hash Table, String, Design, Trie. Asked at MongoDB in the last 6 months.
#1146 Snapshot Array
LeetCode #1146: Snapshot Array. Difficulty: Medium. Topics: Array, Hash Table, Binary Search, Design. Asked at MongoDB in the last 6 months.
#146 LRU Cache
LeetCode #146: LRU Cache. Difficulty: Medium. Topics: Hash Table, Linked List, Design, Doubly-Linked List. Asked at MongoDB in the last 6 months.
#139 Word Break
LeetCode #139: Word Break. Difficulty: Medium. Topics: Array, Hash Table, String, Dynamic Programming, Trie, Memoization. Asked at MongoDB in the last 6 months.
#349 Intersection of Two Arrays
LeetCode #349: Intersection of Two Arrays. Difficulty: Easy. Topics: Array, Hash Table, Two Pointers, Binary Search, Sorting. Asked at MongoDB in the last 6 months.
#23 Merge k Sorted Lists
LeetCode #23: Merge k Sorted Lists. Difficulty: Hard. Topics: Linked List, Divide and Conquer, Heap (Priority Queue), Merge Sort. Asked at MongoDB in the last 6 months.
Most Common OA Topics
MongoDB OA Format and Platform
The MongoDB online assessment is delivered through a proctored online platform, most commonly HackerRank. Candidates receive the OA link by email after passing an initial resume review. The coding section typically contains 2 to 3 algorithmic problems with a 70 to 110 minute time limit.
Some MongoDB teams include an additional work simulation section that tests judgment and decision-making rather than coding ability. This section is not present for all roles. Check the LeakCode question database filtered by role type to see what past candidates for your specific role reported.
FAQ
Does MongoDB have an online assessment?
Yes. MongoDB uses an OA as the first technical screen for most engineering and technical roles. It is typically sent after a resume review and before any human interviews. The format has remained consistent across recent hiring cycles.
How hard is the MongoDB OA?
Based on candidate reports, MongoDB OA problems range from LeetCode medium to hard. Expect at least one problem that requires an efficient algorithm (not brute force) to pass all test cases within the time limit.
Where do these OA questions come from?
All questions in the LeakCode database are sourced from actual candidate reports on 1Point3Acres, Blind, Glassdoor, Reddit, and LeetCode. They are not AI-generated. Each question links to its source where the original report is public.
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