Robinhood Data Scientist Interview Questions
Practice the exact questions companies are asking right now.
Diagnose Decline in First Day Funding Rate
Diagnostic Case: First-Day Funding Rate Drop Context You are on a product analytics team monitoring onboarding performance. The team observes a declin...
List Transactions During Active 'Gold' Membership Period
customer_profile +-------------+----------------+--------------------+-------------------+ | customer_id | membership_type| membership_start_date| mem...
Analyze Transaction Flow and User Engagement Efficiently
transactions +---------------+-------------+------------+--------+ | transaction_id| from_user_id| to_user_id | amount | +---------------+------------...
Identify Transactions During 'Golden' Membership Period
transaction +-----------+---------+------------+---------+ | trans_id | user_id | trans_date | amount | +-----------+---------+------------+--------...
Write SQL to localize trading drop contributors
Use the schema and samples below. Unless stated, treat a user as active on a day if they attempted any order (any status). Dates are inclusive. Schema...
Prove causality for trading metric drop
Goal You need to separate market-driven fluctuations from a product-caused decline in executed_trades per active user around a known release on 2025-0...
Diagnose sustained drop in executed trades
Brokerage Analytics Troubleshooting: Trades Per Active User Down 22% Context You are the analyst for a brokerage product that spans onboarding through...
Write SQL and Python for transaction analytics
You are given user and transaction data. Part A (SQL): Use a join and window functions to answer the prompts below using the following schema and samp...
Design an experiment to launch fractional shares
Context You work on a brokerage/investing app. The team is considering launching fractional share trading (users can buy/sell fractions of a stock/ETF...
Identify Overlapping Sessions and Optimize Coverage
Scenario During the technical screen, candidates must implement interval algorithms used in fraud-detection pipelines to reconcile overlapping user ac...
Identify Top Users with Declined Transactions in SQL
Transactions +----------------+---------+--------+----------+---------------------+ | transaction_id | user_id | amount | status | timestamp ...
Create OHLC Aggregates from Tick Data in Python
price_stream +-----------+-------+ | timestamp | price | +-----------+-------+ | 0 | 3 | | 1 | 2 | | 2 | 4 | | 3 ...
Evaluate Core Metrics for New Product Feature Launch
Scenario You are a data scientist evaluating the health of a newly launched product feature in a consumer-facing app (e.g., investing/finance). The go...
Design Real-Time Analytics Pipeline with Kafka and Flink
Real-Time Clickstream Analytics Pipeline with Kafka and Flink Scenario You need to design a real-time pipeline that ingests website click events via K...