Process
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Call with a recruiter. You were asked why you were interested in MongoDB. At the end of the interview, they let you know that their colleague would be reaching out about scheduling a 1-hour technical interview. After talking to friends who also applied, this stage is actually important in determining whether you get a technical interview. Know why you want to work at MongoDB!
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Highly technical interview. This covered CS fundamentals (binary search trees, garbage collection, maps, sorts), operating systems, and three programming questions on a collaboration site. It lasted the full hour.
Questions
What is the difference between Merge Sort and Quick Sort?
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Interview Statistics
The following metrics were computed from 53 interview experiences for the MongoDB Software Engineer role in United States.
Success Rate
MongoDB's interview process for their Software Engineer roles in the United States is very selective, failing most engineers who go through it.
Experience Rating
Candidates reported having very good feelings for MongoDB's Software Engineer interview process in United States.
MongoDB Work Experiences
- 3.0The manager was not professionalSoftware Engineer • Current EmployeeMarch 5, 2026Pros: The company is small and has diversity.Cons: Management is chaotic. The manager didn't know how to respect people and was not professional. It was my first time seeing a manager like that.
- 5.0Great Balance, Some Team FrictionSoftware Engineer • Former EmployeeNew York, New York, United StatesNovember 15, 2022Pros: Great work-life balance, friendly team culture.Cons: Small issues with product team and engineering collaboration.
- 1.0Culture depends on your managerSoftware Engineer • Former EmployeeJanuary 26, 2023Pros: Good work-life balance, generally chill coworkers.Cons: I've worked many years at this company, and I can say that it once had a good culture. I'm not sure when it went downhill, but I've definitely seen a lot of my friends leave within the last year because of bad managers or uninteresting work. Managers used to be really good. Behavioral interviews were an emphasis, and I can't say that's the case anymore. It can be hit or miss, and if you're unlucky with a bad one, then your experience can be terrible.
MongoDB Interview Questions
