| Solve Array Distance and Wiki Navigation Software EngineerCoding | Medium | Apr 23, 2026 |
| Implement Document Predicate APIs Software EngineerCoding | Medium | Apr 12, 2026 |
| Design a Cron Job Scheduler Software EngineerSystem Design | Medium | Apr 12, 2026 |
| Find Shortest Wiki Click Path Software EngineerCoding | Medium | Apr 7, 2026 |
| Design a REST API Abstraction Layer Software EngineerSystem Design | Hard | Apr 5, 2026 |
| Compute Inherited Role Privileges Software EngineerCoding | Hard | Apr 5, 2026 |
| Solve three coding rounds Software EngineerCoding | Medium | Mar 1, 2026 |
| Schedule prerequisite classes with retakes Software EngineerCoding | Easy | Mar 1, 2026 |
| Minimize coins with overpay and change Software EngineerCoding | Hard | Mar 1, 2026 |
| Design a disk-backed KV store under contention Software EngineerSystem Design | Easy | Mar 1, 2026 |
| Implement topological sort and tree boundary traversal Software EngineerCoding | Medium | Feb 12, 2026 |
| Compute effective permissions on DAG and prune tree Software EngineerCoding | Medium | Feb 12, 2026 |
| Solve scheduling and tree path problems Software EngineerCoding | Hard | Feb 11, 2026 |
| Solve four OA algorithm problems Software EngineerCoding | Hard | Jan 22, 2026 |
| Implement an in-memory file system Software EngineerCoding | Hard | Jan 6, 2026 |
| Design an ACL authorization checking service Software EngineerSystem Design | Hard | Jan 6, 2026 |
| Compute total time to finish all courses Software EngineerCoding | Medium | Jan 6, 2026 |
| Maximize revenue by choosing one query type Software EngineerCoding | Hard | Jan 1, 2026 |
| Check if each recipe is a contiguous subsequence Software EngineerCoding | Hard | Jan 1, 2026 |
| Validate an extended tic-tac-toe state Software EngineerCoding | Medium | Dec 15, 2025 |
| Design an object store with deduplication Software EngineerSystem Design | Medium | Dec 15, 2025 |
| Implement course scheduling and rate limiter analysis Software EngineerCoding | Hard | Nov 22, 2025 |
| Design transactional in-memory key-value store Software EngineerCoding | Hard | Nov 4, 2025 |
| Contrast FCF vs NI; choose one statement Data Scientist | Medium | Oct 13, 2025 |
| Lead innovation and automate a critical process Data ScientistBehavioral | Medium | Oct 13, 2025 |
| Design an analytic warehouse for event data Data Scientist | Medium | Oct 13, 2025 |
| Present an end-to-end project and defend decisions Data ScientistBehavioral | Hard | Oct 13, 2025 |
| Solve and optimize 3Sum and variants at scale Data ScientistCoding | Medium | Oct 13, 2025 |
| Decide and justify product metrics amid trade-offs Data ScientistProduct Sense | Hard | Oct 13, 2025 |
| Build a cohort dashboard with Streamlit and SQL Data Scientist | Medium | Oct 13, 2025 |
| Describe navigating ambiguous, repetitive questioning Data ScientistBehavioral | Medium | Oct 13, 2025 |
| Design an A/B test for ML model launch Data ScientistProduct Sense | Hard | Oct 13, 2025 |
| Design and validate a cost-sensitive classifier Data Scientist | Hard | Oct 13, 2025 |
| Query seven-day conversion with windows and dedupe Data Scientist | Medium | Oct 13, 2025 |
| Derive uniform RNGs from limited or biased sources Data Scientist | Hard | Oct 13, 2025 |
| Implement DFS with cycle detection and topo order Data ScientistCoding | Hard | Oct 13, 2025 |
| Transform tree using counterpart subtree sums Software EngineerCoding | Medium | Sep 6, 2025 |
| Solve build ordering and expression evaluation Software EngineerCoding | Medium | Sep 6, 2025 |
| Set second tree values by subtree sums Software EngineerCoding | Medium | Sep 6, 2025 |
| Serialize and deserialize a dictionary trie Software EngineerCoding | Medium | Sep 6, 2025 |
| Serialize and deserialize a dictionary trie Software EngineerCoding | Medium | Sep 6, 2025 |
| Schedule dependent services with layered startup Software EngineerCoding | Medium | Sep 6, 2025 |
| Implement crawler and bracket validator Software EngineerCoding | Medium | Sep 6, 2025 |
| Find longest unique-character substring Software EngineerCoding | Medium | Sep 6, 2025 |
| Find longest substring with at most k distinct Software EngineerCoding | Medium | Sep 6, 2025 |
| Find first error and propagate failures Software EngineerCoding | Medium | Sep 6, 2025 |
| Filter hierarchical paths after deletions Software EngineerCoding | Medium | Sep 6, 2025 |
| Discuss challenges and cross-functional collaboration Software EngineerBehavioral | Medium | Sep 6, 2025 |
| Design under vague distributed requirements Software EngineerSystem Design | Hard | Sep 6, 2025 |
| Design resilient auth with flaky third-party tokens Software EngineerSystem Design | Hard | Sep 6, 2025 |
| Design resilient auth with flaky third-party Software EngineerSystem Design | Hard | Sep 6, 2025 |
| Design multi-core service startup scheduler Software EngineerSystem Design | Hard | Sep 6, 2025 |
| Design error detection and propagation algorithms Software EngineerCoding | Medium | Sep 6, 2025 |
| Design cache for DAG-based query views Software EngineerSystem Design | Hard | Sep 6, 2025 |
| Design cache for DAG-based query views Software EngineerSystem Design | Hard | Sep 6, 2025 |
| Design a multi-tenant quota system Software EngineerSystem Design | Hard | Sep 6, 2025 |
| Design a distributed system end-to-end Software EngineerSystem Design | Hard | Sep 6, 2025 |
| Design a concurrent web crawler Software EngineerSystem Design | Hard | Sep 6, 2025 |
| Describe challenging project and cross-functional collaboration Software EngineerBehavioral | Hard | Sep 6, 2025 |
| Compute task order and layered execution Software EngineerCoding | Medium | Sep 6, 2025 |
| Compute shortest path between two tree nodes Software EngineerCoding | Medium | Sep 6, 2025 |
| Compute shortest path between tree nodes Software EngineerCoding | Medium | Sep 6, 2025 |
| Compute height after deletions; enumerate valid delete sets Software EngineerCoding | Medium | Sep 6, 2025 |
| Check balanced parentheses with multiple bracket types Software EngineerCoding | Medium | Sep 6, 2025 |
| Evaluate arithmetic expression with variables Software EngineerCoding | Medium | Aug 14, 2025 |
| Compute task order with prerequisites Software EngineerCoding | Medium | Aug 14, 2025 |
| Design an in-memory filesystem and circular queue Software EngineerCoding | Medium | Aug 11, 2025 |
| Transform tree with subtree sum mapping Software EngineerCoding | Medium | Jul 26, 2025 |
| Design a distributed tree node counter Software EngineerSystem Design | Medium | Jul 26, 2025 |
