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.
I applied online. The process took 2 months. I interviewed at MongoDB (New York, NY) in Nov 2023
Interview
Recruiter call, Technical screening, Final rounds - 1 technical, 1 hiring manger, 1 system design, 1 executive. Straight forward interview process.
The interviewers had already decided not to move forward even before the interview started. They looked very uninterested and didn't have any intention to move forward. Just wasting time because they have nothing better to do. Final round interviews should be onsite. Because companies don't spend any money on the interviewee by taking interviews online, they keep taking interviews for months, and making the whole process tiresome.
Interview questions [1]
Question 1
Technical interview: Design an LRU cache
Final round: find max vowels in a substring
straight from LC
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.
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