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 6 weeks. I interviewed at MongoDB in Oct 2021
Interview
Typical process - recruiter call, phone screen, virtual on-site. Their tooling was intuitive for following the interview journey - complete with headshots of your actual interviewers coupled with zoom and coderpad-like links (I forget the actual platform used).
Interviewers were passionate about their work and happy.
Overall I will say that the interviews were harder than many other places but fair, and allowed me to display knowledge. No "gotchas". Interviewers were interactive and receptive to questions.
Interview questions [1]
Question 1
Data Structures, Algorithms, Concurrency. Generally Leetcode Medium style.
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