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MongoDB

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3.7

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Video summary

Filter interviews by

MongoDB Interview Questions, Process, and Tips

Updated 19 Jan 2025

MongoDB Interview Experiences

Popular Designations

14 interviews found

Interview Questions & Answers

Anonymous

posted on 11 Mar 2022

I was interviewed in Sep 2021.

Round 1 - Video Call

(1 Question)

Round duration - 50 minutes
Round difficulty - Medium

The first interview took place in afternoon at around 1pm. Interviewer was friendly and gave his introduction at start of interview. The interview started with an easy DS/Algo question, which I solved easily. This was followed by surface knowledge of DBMS, which consisted of a hard SQL query, at which I got stuck. OS was also tested deeply. The interviewer was satisfied at end of interview.

Q1.

Merge Overlapping Intervals Problem Statement

You are given 'N' intervals, each defined by two integers, marking its boundaries. Your task is to merge all overlapping intervals and return a list of merged...

Add your answer

Round 2 - Video Call

(1 Question)

Round duration - 50 minutes
Round difficulty - Medium

The interview took place at around 5pm. There were 2 interviewers and they were very friendly. I was first asked about my projects in resume. We had a long discussion on one of my projects which included mongoDB. Then a DS/Algo question was asked which I solved quickly. Then we had a deep discussion on OS and Computer networks. Lastly there was another coding question given to end the interview. The interviewers were satisfied.

Q1.

Number of Islands Problem Statement

You are provided with a 2-dimensional matrix having N rows and M columns, containing only 1s (land) and 0s (water). Your goal is to determine the number of islands in t...

Add your answer

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAMongoDB interview preparation:Topics to prepare for the interview - Data Structures, Operating System, DBMS, Computer Networks, Graphs, Dynamic Programming, OOPSTime required to prepare for the interview - 3 monthsInterview preparation tips for other job seekers

Tip 1 : Practice atleast 300 questions and be regular
Tip 2 : Give leetcode weekly contests
Tip 3 : CS fundamentals like OS and DBMS are very important

Application resume tips for other job seekers

Tip 1 : Have atleast 2-3 projects in the resume
Tip 2 : A project with mongoDB in tech stack could be a plus point
Tip 3 : Be honest with your resume

Final outcome of the interviewSelected

Skills evaluated in this interview

SDE (Software Development Engineer) Interview Questions & Answers

Anonymous

posted on 25 Jul 2022

I applied via Referral and was interviewed in Jan 2022. There were 2 interview rounds.

Round 1 - Coding Test

2 coding ques easy - medium level

Round 2 - Technical

(1 Question)

Q1. Merge intervals, find second largest salary in sql

Ans.

Merge intervals and find second largest salary in SQL

For merging intervals, sort them by start time and then iterate through the intervals to merge overlapping ones
For finding second largest salary, use the SQL query: SELECT MAX(salary) FROM employees WHERE salary < (SELECT MAX(salary) FROM employees)

Answered by AI

Add your answer

Interview Preparation Tips

Topics to prepare for MongoDB SDE (Software Development Engineer) interview:

Interview preparation tips for other job seekers - Be calm, have a smile on your face, do as many questions as you can on different platforms

Skills evaluated in this interview

SDE (Software Development Engineer) Interview Questions asked at other Companies

Q1. A string is given consisting of lowercase alphabets. Write a function which returns yes if the string has all the lowercase letters appearing in it at least once. O(N) time and without using extra space

View answer (3)

Technical Service Engineer Interview Questions & Answers

Anonymous

posted on 21 Mar 2023

Interview experience

Excellent

Difficulty level

Moderate

Process Duration

2-4 weeks

Result

Selected

I applied via Company Website and was interviewed before Mar 2022. There were 5 interview rounds.

Round 1 - Resume Shortlist

Pro Tip by AmbitionBox:

Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.

View all tips

Round 2 - Case Study

Use case about the performance and diagnostics of database trouble shooting

Round 3 - Case Study

Understanding of databases internal, troubleshooting

Round 4 - Coding Test

Basics of scripting using bash and Python (whichever you mentioned in the resume)

Round 5 - Case Study

Deep diving into the internals of Operating system, such as thp, swappiness, memory management

Interview Preparation Tips

Topics to prepare for MongoDB Technical Service Engineer interview:

Computer Networking
Storage
Operating Systems
grep
Bash
Database

Interview preparation tips for other job seekers - understand about the OS, basic N/w, storage, Databases and Memory management

Technical Service Engineer Interview Questions asked at other Companies

Q1. What is the potential of your market and share of your product??

View answer (2)

Consultant Engineer Interview Questions & Answers

Anonymous

posted on 10 Jun 2021

I applied via Recruitment Consultant and was interviewed in Dec 2020. There were 5 interview rounds.

Interview Questionnaire

5 Questions

Q1. Schema design for Multi-Level Parking System?

Ans.

A multi-level parking system schema design involves creating a database to manage parking spots and their availability.

Create a database to store information about parking spots, levels, and availability
Design a user interface for customers to view available spots and reserve them
Implement a system to track the entry and exit of vehicles
Incorporate sensors or cameras to monitor parking spot availability
Consider integra

Answered by AI

Add your answer

Q2. Indexing Strategy?

Ans.

Indexing strategy is a method of organizing and optimizing data retrieval from a database.

Choose appropriate data structures for indexing
Consider the size and complexity of the database
Regularly analyze and optimize the indexing strategy
Examples: B-tree, hash index, bitmap index

Answered by AI

Add your answer

Q3. Indexing Internals?

Add your answer

Q4. Index Optimizations?

Add your answer

Q5. Architectures for the Microservices you have recently worked on?

Ans.

We have used a combination of containerization and orchestration tools like Docker and Kubernetes for our microservices architecture.

We have followed the principles of domain-driven design to identify the boundaries of our microservices.
We have used RESTful APIs for communication between microservices.
We have implemented fault tolerance and resilience patterns like circuit breakers and retries.
We have used event-driven...

Answered by AI

Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Be calm, assertive, elaborative while answering. Do more discovery on the questions they ask.

Skills evaluated in this interview

Consultant Engineer Interview Questions asked at other Companies

Q1. Pattern Search in Strings Given two strings S and P consisting of lowercase English alphabets, determine if P is present in S as a substring. Input: The first line contains an integer T, the number of test cases.Each test case consists of a... read more

View answer (1)

Jobs at MongoDB

View all

MongoDB - Principal Application Engineer - Java Technologies (10-13 yrs)

10-13 Yrs

Not Disclosed

MongoDB - Senior Application Consultant - System Design (7-10 yrs)

7-10 Yrs

Not Disclosed

Salesforce Support Engineer

Remote

5-10 Yrs

Not Disclosed

Senior Specialist, Accounts Payable

Gurgaon / Gurugram

5-8 Yrs

Not Disclosed

HR Information System Intern

Gurgaon / Gurugram

0-1 Yrs

Not Disclosed

Specialist, Sales Performance

Gurgaon / Gurugram

3-4 Yrs

Not Disclosed

Top trending discussions

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Salary Discussions, Hike & Promotions

an architect

Help me choose New Regime or Old Regime for my salary revision

Hi I am working as a full stack Architect (14 yeo) and Following is my CTC. Please help me calculate in hand salary and choose New or OLD regime. I have been doing Old regime till last year with a salary of 48 CTC. Now post revision it increased to 56L CTC effective March 1st. My PF alone will cover 80C Also have additional 50000 contribution in NPS My HRA is around 25K per month (300000) Health insurance for family 28000 Mom's medical expense 30000 (No personal (Have medical complications) or corporate insurance unfortunately) I have a home loan however its under construction, so not eligible yet for tax benefits

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MongoDB Interview FAQs

How many rounds are there in MongoDB interview?

MongoDB interview process usually has 3 rounds. The most common rounds in the MongoDB interview process are Technical, One-on-one Round and HR.

How to prepare for MongoDB interview?

Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at MongoDB. The most common topics and skills that interviewers at MongoDB expect are MongoDB, Recruitment, Data Management, Python and Salesforce.

What are the top questions asked in MongoDB interview?

Some of the top questions asked at the MongoDB interview -

Give me examples of how you closed a deal in the pa...read more
how would u scale the app (database wise) over Indi...read more
Explain the end to end process of lead gen to closu...read more

How long is the MongoDB interview process?

The duration of MongoDB interview process can vary, but typically it takes about 2-4 weeks to complete.

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MongoDB - Senior Application Consultant - System Design (7-10 yrs)

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