| How to rank statements by likelihood Data Scientist | Hard | Feb 3, 2026 |
| Find missing numbers in sequences Data ScientistCoding | Hard | Feb 3, 2026 |
| Design a circular queue data structure Software EngineerCoding | Medium | Jan 13, 2026 |
| Optimize flight and cargo bookings for profit Software EngineerCoding | Hard | Dec 5, 2025 |
| Design low-latency trading infrastructure Software EngineerSystem Design | Hard | Dec 5, 2025 |
| Answer why SWE and why Optiver Software EngineerBehavioral | Hard | Dec 5, 2025 |
| Compute probabilities and expectations in random processes Data Scientist | Easy | Nov 19, 2025 |
| Solve probability and expectation problems Data Scientist | Hard | Sep 6, 2025 |
| Solve a Skyscraper puzzle efficiently Data ScientistCoding | Medium | Sep 6, 2025 |
| Plan for timed probability assessment Software Engineer | Medium | Sep 6, 2025 |
| Optimize switching puzzle solution Data ScientistCoding | Medium | Sep 6, 2025 |
| Minimize moves to transform floor layouts Data ScientistCoding | Medium | Sep 6, 2025 |
| Match alphanumeric patterns in a stream Data ScientistCoding | Medium | Sep 6, 2025 |
| Find next terms in sequences Data Scientist | Hard | Sep 6, 2025 |
| Devise sequence-rule detection strategy Data ScientistCoding | Medium | Sep 6, 2025 |
| Design a topic-based news subscription system Software EngineerSystem Design | Hard | Sep 6, 2025 |
| Design a satellite propagation simulator Software EngineerCoding | Medium | Sep 6, 2025 |
| Design a queue and analyze tradeoffs Software EngineerCoding | Medium | Sep 6, 2025 |
| Design a balloon stability tracker Software EngineerCoding | Medium | Sep 6, 2025 |
| Compute odds under time pressure Data Scientist | Medium | Sep 6, 2025 |
| Compare two programs for equivalence Data ScientistCoding | Medium | Sep 6, 2025 |
| Solve quick probability questions Software Engineer | Medium | Aug 13, 2025 |
| Solve numeric sequence pattern puzzles Software Engineer | Medium | Aug 13, 2025 |
| Implement price-based order matcher Software EngineerCoding | Medium | Aug 13, 2025 |
| Find patterns in numeric sequences quickly Software Engineer | Easy | Aug 13, 2025 |
| Design and backtest a trading strategy Software EngineerProduct Sense | Hard | Aug 13, 2025 |
| Demonstrate task switching and memory strategies Software Engineer | Medium | Aug 13, 2025 |
| Decide and implement DP/heap and approximation Software EngineerCoding | Medium | Aug 13, 2025 |
| Compute permutations with repeated letters Software Engineer | Easy | Aug 13, 2025 |
| Compute negative-price probability after n steps Software Engineer | Medium | Aug 13, 2025 |
| Compute expectations, conditionals, odds, and distributions Software Engineer | Medium | Aug 13, 2025 |
| Analyze EV, arbitrage, and bet sizing across games Data Scientist | Hard | Aug 13, 2025 |
| Introduce yourself and justify quant research fit Software EngineerBehavioral | Medium | Aug 12, 2025 |
| Design dice betting strategy under time limit Software Engineer | Medium | Aug 12, 2025 |
| Optimize interval-scoring strategy Data Scientist | Hard | Aug 7, 2025 |
| Answer English HR classics Data ScientistBehavioral | Medium | Aug 7, 2025 |
| Design a Balloon Festival Simulator Software EngineerCoding | Medium | Jul 27, 2025 |
| Design an object-oriented queue and compare implementations Software EngineerCoding | Medium | Jul 19, 2025 |
| Solve three mini-game algorithm tasks Software EngineerCoding | Medium | Jul 17, 2025 |
| Simulate satellite message propagation with timing Software EngineerCoding | Medium | Jul 17, 2025 |
| Identify OS component causing process starvation Software EngineerCoding | Medium | Jul 17, 2025 |
| Explain OS processes, threads, and memory Software EngineerCoding | Medium | Jul 17, 2025 |
| Estimate expected comparisons in a BST Software EngineerCoding | Medium | Jul 17, 2025 |
| Design a subscription push service Software EngineerSystem Design | Hard | Jul 17, 2025 |
| Compute expected counters after color elimination Data Scientist | Medium | Jul 17, 2025 |
| Compute expected coin flips to meet on octagon Data Scientist | Medium | Jul 17, 2025 |
| Compare common data structures and uses Software EngineerCoding | Medium | Jul 17, 2025 |
| Simulate return-weighted rebalancing strategy Software EngineerProduct Sense | Medium | Jul 16, 2025 |
| Detect currency arbitrage with costs Software EngineerCoding | Medium | Jul 16, 2025 |
| Design a satellite propagation simulator Software EngineerSystem Design | Hard | Jul 16, 2025 |
| Count nonnegative buy/sell sequences Software EngineerCoding | Medium | Jul 16, 2025 |
