Senior Software Engineer Interview Experience - Warsaw, Masovian Voivodeship
Process
I was contacted by a recruiter on LinkedIn and had my first HR screening interview a few days later. During the interview, HR asked why I applied for the role and then moved on to technical questions that were focused on concurrency, idempotency, and PostgreSQL.
Questions
The time complexity of a Python dictionary lookup.
The time complexity of the provided code (it was a duplicate search using a seen set).
How I would design a PostgreSQL database with extremely high expected I/O frequency.
Whether I would use threading for I/O operations.
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Interview Statistics
The following metrics were computed from 5 interview experiences for the Revolut Senior Software Engineer role in Warsaw, Masovian Voivodeship.
Success Rate
Revolut's interview process for their Senior Software Engineer roles in Warsaw, Masovian Voivodeship is extremely selective, failing the vast majority of engineers.
Experience Rating
Candidates reported having very negative feelings for Revolut's Senior Software Engineer interview process in Warsaw, Masovian Voivodeship.
Revolut Work Experiences
- 4.0Good place to workSenior Software Engineer • Current EmployeeWarsaw, Masovian Voivodeship, PolandOctober 26, 2025Pros: - Very good compensation - Possibilities for production growthCons: - Intensive work - A lot of boilerplate in codebase
- 5.0Great place to learn and excelSenior Software Engineer • Current EmployeeWarsaw, Masovian Voivodeship, PolandJune 10, 2025Pros: - Lots of opportunities to learn. - Great people around. - Good compensation package. - Sense of making an impact.Cons: Work-life balance struggles sometimes.
- 5.0Perfect place for engineers to growSenior Software Engineer • Current EmployeeWarsaw, Masovian Voivodeship, PolandMarch 28, 2025Pros: Interesting projects - a lot of opportunities to grow Strong engineering teams Good compensationCons: A lot of projects with tight deadlines.
Revolut Interview Questions
