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
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 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