Home / Company interviews / MongoDB · Updated October 2026

MongoDB interview questions and practice

giveinterview has mock interviews built from 3 MongoDB job posts since October 2026, 3 of them still open. Each practice interview runs the loop below: a 10-minute voice screen, then 2 rounds (coding, then coding). The topics that come up most are algorithms, C++, data structures, debugging, Go. 21 coding questions are known to come up in MongoDB interviews (4 easy, 13 medium, 4 hard), 4 of them in the last six months. The most common topics are Array, Hash Table, String, Design.

Practice interviews built from public job posts and question lists. Each open post links to the original so you can apply on MongoDB’s own site; MongoDB does not run, see or review your practice.

Start a full MongoDB mock interview →Add MongoDB to my plan Or one question first · 2 min

3Job posts to practise

3Posts still open

3Steps in a practice loop

100 minTypical total length

How the MongoDB practice interview runs

The most common loop across the mock interviews built from MongoDB job posts.

ScreenVoice screen10 min
Round 1Coding45 min
Round 2Coding45 min

What MongoDB interviews cover

Skills and topics, with the number of MongoDB job posts that list each one.

algorithms3
C++3
data structures3
debugging3
Go3
Java3
Javascript3
Node.js3
problem solving3
Python3
software design3

Coding questions MongoDB asks

From public company-tagged interview question lists. Most recent and most frequent first.

Easy 4Medium 13Hard 4

Array10
Hash Table10
String7
Design5
Binary Search4
Linked List3
Trie3
Two Pointers3
Heap (Priority Queue)3
Depth-First Search3
Breadth-First Search3
Sorting2

Question	Difficulty	Asked recently
Snapshot Array	Medium	Yes
LRU Cache	Medium	Yes
Merge Intervals	Medium	Yes
Two Sum	Easy	Yes
Implement Trie (Prefix Tree)	Medium	No
Intersection of Two Arrays	Easy	No
Word Break	Medium	No
Text Justification	Hard	No
Merge k Sorted Lists	Hard	No
Stock Price Fluctuation	Medium	No
Sliding Window Maximum	Hard	No
Course Schedule II	Medium	No
Insert Interval	Medium	No
Time Based Key-Value Store	Medium	No
Merge Two Binary Trees	Easy	No
String Compression	Medium	No
Compare Version Numbers	Medium	No
Word Break II	Hard	No
Clone Graph	Medium	No
Search in Rotated Sorted Array	Medium	No
Merge Two Sorted Lists	Easy	No

MongoDB job posts you can practise for

Open a post to practise its interview and get the link to apply on MongoDB’s site.

Role	Where	Steps	Job post
2027 - Software Engineering Intern, AMER	Hybrid · New York, NY	3	Open	Practise Add to plan

Questions about MongoDB interviews

How many rounds are in a MongoDB interview?

The mock interviews built from MongoDB job posts usually run a 10-minute voice screen, then 2 rounds (coding, then coding), about 100 minutes in all.

What topics do MongoDB interviews cover?

The ones that come up most are algorithms, C++, data structures, debugging, Go.

What coding questions does MongoDB ask?

21 questions are tagged to MongoDB in public interview lists: 4 easy, 13 medium and 4 hard. The most asked include Snapshot Array, LRU Cache, Merge Intervals.

How do I practise a MongoDB interview?

Answer a 2-minute question for free, then take a mock interview with an AI interviewer, voice and live coding. You get a review that marks the exact line that cost you. The screen and Round 1 of your first role interview are free.

Practise a MongoDB interview before it counts.

Talk it through while you code, and get a review that marks the exact line that cost you. Free to start.

Start a full MongoDB mock interview →Add MongoDB to my plan