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9 problems across 5 categories
| Done | Title | Difficulty | Updated |
|---|---|---|---|
| How do you learn new knowledge quickly? Software EngineerBehavioral | Hard | Jan 6, 2026 | |
| Design an employee directory with reporting queries Software EngineerSystem Design | Hard | Jan 6, 2026 | |
| Design a natural-disaster notification system Software EngineerSystem Design | Hard | Jan 6, 2026 | |
| Design a listing connectivity ingestion service Software EngineerSystem Design | Hard | Nov 5, 2025 | |
| Lead alignment under ambiguity and pressure Data ScientistBehavioral | Hard | Oct 13, 2025 | |
| Audit and onboard unfamiliar datasets safely Data Scientist | Medium | Oct 13, 2025 | |
| Validate and monitor ranking model end-to-end Data Scientist | Hard | Oct 13, 2025 | |
| Choose KPIs and prove impact with experiments Data ScientistProduct Sense | Hard | Oct 13, 2025 | |
| Count vowel-only substrings with all vowels Software EngineerCoding | Medium | Aug 9, 2025 |