Interview Cache

Master your next technical interview with real questions from industry leaders.

Robinhood

36 problems across 5 categories

Title	Difficulty	Updated
Design a Photo Album App Frontend EngineerSystem Design	Medium	Apr 5, 2026
Build a Weekly Calendar Frontend EngineerCoding	Medium	Apr 5, 2026
Solve path and inventory problems Software EngineerCoding	Medium	Apr 3, 2026
Design a distributed job scheduler Software EngineerSystem Design	Medium	Apr 3, 2026
Implement Calendar Layout and String Packing Software EngineerCoding	Medium	Mar 16, 2026
Design a Photo Management Service Software EngineerSystem Design	Medium	Mar 16, 2026
Write SQL to analyze CA residency history Data EngineerCoding	Hard	Feb 28, 2026
Aggregate user logs into 30-minute sessions Data EngineerCoding	Hard	Feb 28, 2026
Compute dependency load factors in a DAG Software EngineerCoding	Medium	Feb 12, 2026
Design a job scheduler with SLA and logs Software EngineerSystem Design	Medium	Feb 11, 2026
Handle security vs velocity conflicts across teams Software EngineerBehavioral	Medium	Jan 22, 2026
Explain auth, key rotation, secrets, and incident response Software EngineerCoding	Medium	Jan 22, 2026
Design authorization and audit logging systems Software EngineerSystem Design	Medium	Jan 22, 2026
Design a constrained cache and secure string validator Software EngineerCoding	Medium	Jan 22, 2026
Compute nearest gate distance in grid Software EngineerCoding	Medium	Jan 22, 2026
Design in-memory payment and friendship system Software EngineerCoding	Easy	Dec 8, 2025
Design a distributed job scheduler service Software EngineerSystem Design	Easy	Dec 8, 2025
Compute trigger counts in a DAG Software EngineerCoding	Easy	Dec 8, 2025
Design a secure trading app on AWS Software EngineerSystem Design	Medium	Oct 21, 2025
Write SQL to localize trading drop contributors Data Scientist	Medium	Oct 13, 2025
Prove causality for trading metric drop Data Scientist	Hard	Oct 13, 2025
Diagnose sustained drop in executed trades Data ScientistProduct Sense	Hard	Oct 13, 2025
Write SQL and Python for transaction analytics Data Scientist	Medium	Oct 13, 2025
Design an experiment to launch fractional shares Data ScientistProduct Sense	Easy	Oct 1, 2025
Design a referral leaderboard with chain-based counts Software EngineerCoding	Medium	Aug 12, 2025
Walk through project scope, ownership, and decisions Software EngineerBehavioral	Medium	Aug 7, 2025
Implement string-based candlestick classifier Software EngineerCoding	Medium	Aug 7, 2025
List Transactions During Active 'Gold' Membership Period Data Scientist	Medium	Aug 4, 2025
Identify Transactions During 'Golden' Membership Period Data Scientist	Medium	Aug 4, 2025
Identify Top Users with Declined Transactions in SQL Data Scientist	Medium	Aug 4, 2025
Identify Overlapping Sessions and Optimize Coverage Data ScientistCoding	Medium	Aug 4, 2025
Evaluate Core Metrics for New Product Feature Launch Data ScientistProduct Sense	Medium	Aug 4, 2025
Diagnose Decline in First Day Funding Rate Data ScientistProduct Sense	Medium	Aug 4, 2025
Design Real-Time Analytics Pipeline with Kafka and Flink Data ScientistBehavioral	Medium	Aug 4, 2025
Create OHLC Aggregates from Tick Data in Python Data Scientist	Medium	Aug 4, 2025
Analyze Transaction Flow and User Engagement Efficiently Data Scientist	Medium	Jul 12, 2025