Senior Software Engineer Interview Experience - Madrid, Community of Madrid
Process
3 weeks from first contact to offer.
I asked for a fast process, and they accelerated all the steps.
Take-home project: spend more time on it if you can.
4-5 interviews with PO, EM, Dev team, Tech Lead.
Questions
Experience with AWS DevOps, scaling microservices, Kafka streams, Airflow, EC2, Redis, and Postgres. Experience with NLP text embedding, including parsing, TF-IDF, ML techniques, and LLM transformers.
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Interview Statistics
The following metrics were computed from 1 interview experience for the Wikimedia Foundation Senior Software Engineer role in Madrid, Community of Madrid.
Success Rate
Wikimedia Foundation's interview process for their Senior Software Engineer roles in Madrid, Community of Madrid is incredibly easy as the vast majority of engineers get an offer after going through it.
Experience Rating
Candidates reported having very good feelings for Wikimedia Foundation's Senior Software Engineer interview process in Madrid, Community of Madrid.
Wikimedia Foundation Work Experiences
- 4.0Remote-friendly environment but short-staffedSenior Software Engineer • Former EmployeeToronto, Ontario, CanadaOctober 4, 2025Pros: Good culture and remote-friendly environmentCons: - Short-staffed, so work can be demanding at times. - Tight budget, so promotions are scarce and increases are limited.
- 4.0Improving, but still confusion at the topSenior Software Engineer • Current EmployeeNew York, New York, United StatesAugust 7, 2024Pros: High quality remote-first workplace Good benefits Everyone loves WikipediaCons: High-level management has historically been zero-sum and top-down, but this seems to be improving.
- 3.0Pros and consSenior Software Engineer • Current EmployeeMemphis, Tennessee, United StatesJuly 27, 2023Pros: Good people who really do try their best.Cons: Too much focus on what we have done, not enough on what we should do.
