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MongoDB Interview Questions

Updated Nov 19, 2014
Updated Nov 19, 2014
6 Interview Reviews

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Interview Experience

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6 Candidate Interview Reviews Back to all interviews

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  1.  

    Software Engineering Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Application Details

    I applied through college or university. The process took 3 weeksinterviewed at MongoDB.

    Interview Details

    Met MongoDB recruiters at university job fair and applied. Got an email asking for a brief HR call in a week. Passed HR call and had 30 min technical phone interview answering coding questions. After 2 weeks they informed I made it to the final round of interviews. Three video calls asking a variety of technical questions. Offer was extended 3 days later.

    Interview Questions
    • Convert an integer to a string in C without using any libraries or casting   View Answer
    Accepted Offer
    Positive Experience
    Difficult Interview
  2. 2 people found this helpful  

    Senior Engineer Interview

    Anonymous Interview Candidate in Palo Alto, CA
    Anonymous Interview Candidate in Palo Alto, CA
    Application Details

    I applied online. The process took 2 weeksinterviewed at MongoDB in July 2013.

    Interview Details

    recruiter call, technical interview with hiring manager, technical team group interview onsite, interview interview with VP. Reference check. Offer made

    Interview Questions
    • how various search algorithm O time change if it is done in parallel on multi cpu machine   View Answer
    Reasons for Declining

    better option available

    Declined Offer
    Positive Experience
    Average Interview
  3.  

    Technical Architect Interview

    Anonymous Interview Candidate in New York, NY
    Anonymous Interview Candidate in New York, NY
    Application Details

    I applied online – interviewed at MongoDB in December 2012.

    Interview Details

    The single biggest pain point was how long this took. And, every time I got a call from HR, it was to tell me that another call with someone else had been scheduled.

    In total I fielded over 12 different onsite and offsite meetings over 3 months. There were several times when I was convinced that this is a serious waste of time.

    After the technical phone screen, I went in for an in-person invterview that lasted 4 hours and there I met 4 people. That same day I received a call from one more person.

    It took 3 months to receive an offer.

    Interview Questions
    • We have a person who logs into a website using their Facebook credentials. Anything they post to that website can be seen by their friends and those friends' friends only.
      How would you optimize the collection of this data?
       
      Answer Question
    Negotiation Details
    I didn't negotiate. I took the base salary, stock options and bonus structure as is. I thought it was pretty fair.
    Accepted Offer
    Positive Experience
    Average Interview
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  5.  

    Software Engineer Interview

    Anonymous Interview Candidate in New York, NY
    Anonymous Interview Candidate in New York, NY
    Application Details

    I applied in-person. The process took a weekinterviewed at MongoDB in November 2011.

    Interview Details

    Interviews were scheduled over one day. Process was really enjoyable. I was asked a couple of interesting coding questions to see how I think but the majority of the interview time focused on my experiences as CTO, why I was interested in working at 10gen, and what I wanted to do at the company.

    Interview Questions
    • When an interviewer disagreed about a technical choice that I had made for a website I was asked to defend my opinion and argue my point of view.   View Answer
    Accepted Offer
    Positive Experience
    Average Interview
  6. 1 person found this helpful  

    Engineer Interview

    Anonymous Interview Candidate in San Francisco, CA
    Anonymous Interview Candidate in San Francisco, CA
    Application Details

    I applied in-person. The process took 3+ weeksinterviewed at MongoDB in December 2010.

    Interview Details

    As a member of the open source community working with frameworks based on the product I already had a lot of experience and interaction with many people in the company. This lead to an interview and discussions about jobs before that. The interview involved multiple meetings with engineering folk and managers which resulted in a job offer. We then went and back with multiple responses before the offer was accepted. The whole process seem labored and unprofessional (informal) in many ways.

    Interview Questions
    Accepted Offer
    Neutral Experience
    Easy Interview
  7.  

    Software Engineer Interview

    Anonymous Interview Candidate in London, England (UK)
    Anonymous Interview Candidate in London, England (UK)
    Application Details

    I applied in-person. The process took a dayinterviewed at MongoDB in September 2011.

    Interview Details

    As I started out as a contractor, I didn't really have a formal interview. My "contractor interview" consisted of talking with my manager, the CTO and president for about 15-30 minutes each. I think it was more to see whether I would fit in culturally as I had already show that I was able to do my job.

    Negotiation Details
    I just mentioned an amount I was going to be happy with, with a little bit more. That got accepted.
    Accepted Offer
    Positive Experience
    Average Interview

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