Stripe

Stripe

Payments infrastructure with sophisticated fraud detection and data systems.

4 Rounds ~21 Days Hard
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The Interview Loop

Recruiter Screen (30 min)

Standard fit check, behavioral questions, and resume overview.

Technical Loop (3-4 Rounds)

Deep dive into domain knowledge, coding, and system design.

Interview Question Bank

Data Engineer • Coding • hard

Write a SQL query to perform a cohort retention analysis, showing the percentage of new Stripe users who processed a charge in each of their first 6 months.

#Cohort Analysis #Pivoting #Self Joins
Practice
Data Engineer • Coding • medium

Write a SQL query to calculate the 7-day rolling average of payment failures per region, given a table of transactions.

#Window Functions #Aggregations #Time Series
Practice
Data Engineer • Coding • medium

Write a SQL query to find all merchants whose dispute (chargeback) rate exceeded 1% in the last 30 days, requiring at least 100 total transactions.

#Filtering #Ratios #Conditional Aggregation
Practice
Data Engineer • Coding • hard

Calculate the Monthly Recurring Revenue (MRR) for each month given a table of Stripe Billing subscription events (start, upgrade, downgrade, cancel).

#Complex Aggregations #State Tracking #Financial Metrics
Practice
Data Engineer • Coding • hard

Write a SQL query to find the top 3 most common sequences of 3 page visits before a user abandons the Stripe Checkout flow.

#Funnel Analysis #LEAD/LAG #Pathing
Practice
Data Engineer • Coding • easy

Write a SQL query to identify 'churned' merchants (no successful transactions in the last 60 days) and retrieve their last known transaction amount.

#Date Functions #Joins #Subqueries
Practice
Data Engineer • Coding • medium

Write a SQL query to calculate the median time difference between a user creating a Stripe account and their first successful live charge.

#Percentiles #Date Math #Joins
Practice
Data Scientist • Coding • medium

Write a SQL query to find the month-over-month growth rate of Monthly Recurring Revenue (MRR) for Stripe Billing users.

#LAG function #Time Series #Revenue Analytics
Practice
Data Scientist • Coding • easy

Write a SQL query to calculate the conversion rate of Stripe Checkout sessions, broken down by browser type (Chrome, Safari, Firefox).

#Aggregations #CASE WHEN #Group By
Practice
Data Scientist • Coding • medium

Write a SQL query to find the top 3 merchants by total processing volume who also have a dispute rate greater than 1% in the current year.

#CTEs #Filtering #Sorting #Limit
Practice
Data Scientist • Coding • medium

Write a SQL query to calculate the 7-day rolling average of the dispute rate for each merchant over the last 30 days.

#Window Functions #Time Series #Aggregations
Practice
Data Scientist • Coding • hard

Write a SQL query to identify potential 'card testing' attacks. Define card testing as a single IP address attempting more than 20 small transactions (under $5) that fail authorization within a 10-minute window.

#Self Joins #Window Functions #Fraud Detection
Practice
Data Scientist • Coding • medium

Write a SQL query to find all merchants who have churned (defined as having no processed volume in the last 30 days) but still have active Stripe Billing subscriptions.

#Joins #Date Functions #Filtering
Practice
Full Stack Engineer • Technical • medium

Review and optimize a slow SQL query used to fetch a merchant's top 10 highest-value customers over the last year.

#SQL #Database Optimization #Indexing
Practice
Machine Learning Engineer • Coding • medium

Write a SQL query to find the top 3 merchants with the highest chargeback rate in the last 30 days, filtering out merchants with fewer than 100 total transactions.

#Aggregations #Filtering #Joins
Practice
Product Manager • Coding • medium

Write a SQL query to find the top 10 merchants by payment volume who experienced a chargeback in the last 30 days.

#SQL #Data Analysis #Fraud
Practice
Product Manager • Coding • hard

Write a SQL query to calculate the month-over-month retention rate of Stripe Connect platforms.

#SQL #Retention #Cohort Analysis
Practice
Software Engineer • Technical • medium

You are given a poorly performing SQL query used for generating monthly payout reports. Explain how you would analyze and optimize it.

#Database Optimization #Indexing #Query Execution Plans
Practice

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Senior Engineer

Focuses on core competencies, system constraints, and clear communication.

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