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      MongoDB

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      Senior Software Engineer Interview

      16 Oct 2023
      Anonymous interview candidate
      Dublin, Dublin
      Declined offer
      Negative experience
      Difficult interview

      Application

      I applied through a recruiter. The process took 4 weeks. I interviewed at MongoDB (Dublin, Dublin)

      Interview

      Way too many rounds. 1. 15 min with recruiter 2. 2 30min call, screening with tech lead then coding react app 30 min 3. 1.5 hours another react coding interview including tests 4. system design interview, but first getting task in email, preparing it in document, sending it 24 hours ahead, then 1h call presenting it and answering the questions 5. 30 min interview with manager In general bad experience, because i was straightforward from first call that i plan on leaving country, and open only for full remote but ok for working from some other country where Mongo has office (Germany). They said it is fine, until the last round, then said might be ok, they want to give an offer, but would prefer me working from Ireland. When i said no, reply was ok, maybe after another call with leadership. Did that, and their reply was no we wont offer remote from Germany. Only Ireland

      Interview questions [1]

      Question 1

      Coding react app but also expect writing tests on the call. System design but expect spending few hours at home researching
      Answer question
      3

      Other Senior Software Engineer interview reviews for MongoDB

      Senior Software Engineer Interview

      18 Mar 2026
      Anonymous interview candidate
      No offer
      Negative experience
      Average interview

      Application

      I interviewed at MongoDB

      Interview

      Interviewer had a particular solution in mind that took a different approach from my own. My solution was algorithmically correct but not one that they were familiar with and preferred a non-closed form solution.

      Interview questions [1]

      Question 1

      API design question with some standard library usage required.
      Answer question

      Senior Software Engineer Interview

      8 Jan 2026
      Anonymous employee
      Accepted offer
      Positive experience
      Difficult interview

      Application

      I applied through a recruiter. I interviewed at MongoDB

      Interview

      Process was: Recruiter screening, Phone Screen, 5 Virtual Onsite. The whole process took a long time. I loved each interviewer, they were really friendly, nice and passionate with their work. The interview questions were unique and on the harder side but well organized.

      Interview questions [1]

      Question 1

      Tell me about your biggest achievement
      Answer question

      Senior Software Engineer Interview

      24 Oct 2025
      Anonymous interview candidate
      No offer
      Positive experience
      Difficult interview

      Application

      I applied online. The process took 3 weeks. I interviewed at MongoDB in Oct 2025

      Interview

      Recruiter phone interview, a technical screen, then multiple technical interview rounds. I've gone through non-concurrent programming, concurrent programming, algorithms and the design one; didn't make it to the behaviorial and final interviews, The process is well explained, and I have even got feedback afterwards.

      Interview questions [2]

      Question 1

      Concurrent interview: design a concurrent expriring queue
      Answer question

      Question 2

      Algorithms: K-sum (given an array of numbers, a target sum, and K, find K elements of array that sum up to target)
      Answer question

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