Interview Success Stories From
Everything You Need to Succeed
From practice questions to portfolio projects — we've got your entire interview prep covered.
Interview Coding Questions
1000+ real interview questions. Practice SQL, Python, R, and more.
Interview Concepts
Master product sense, statistics, and behavioral questions.
Data Labs
Data projects powered by our cloud hosted Python notebooks, no setup required.
AI StrataTools
Validate and optimize your code in real environments.
Performance Insights
Track your skills, benchmark against the community, and build your public data profile.
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Learning Paths
Personalized journeys for SQL, Python, and Data Science.
Real Interview Questions
Practice Questions from Top Companies
Master the exact questions asked at Google, Meta, Amazon, and 200+ other companies. From coding challenges to conceptual interviews — we've got you covered.
Interview Coding Questions
1000+ real coding challenges
Practice SQL and Python coding questions with our interactive code editor. Write, run, and validate your solutions in real-time.
SQL Dialects
PostgreSQLMySQLMS SQL ServerOracle
Python Libraries
PandasPySparkPolars
Interview Concepts
Master non-coding interview rounds
Prepare for the full interview process with conceptual questions that test your analytical thinking, business acumen, and technical knowledge.
Question Types
System DesignProduct SenseBusiness CaseStatisticsProbabilityModelingTechnicalBehavioral
Data Projects
Build Real Data Projects in Our Cloud Hosted Notebooks
Practice real take-home assignments from top companies. Build your data portfolio and share it directly from your Performance page — no local setup required.
- Real take-home assignments from top tech companies
- Cloud-hosted Python notebooks — no installation needed
- Build and showcase your data portfolio for interviews
- Share your work publicly from your Performance page
Track & Share
Track Your Performance & Build Your Reputation
Track every question you solve, see how you rank against 500K+ members, link GitHub, and build a public profile that gets you noticed.
Track Progress
Monitor your growth across SQL, Python, and analytics
Community Rankings
See how you stack up against 500K+ members
Public Profile
Share your achievements and get discovered
Portfolio Integration
Link GitHub repos and showcase your projects
AI StrataTools
AI StrataTools run your code — so you don't run into errors
Validate and optimize your Python and SQL by running it in real environments, delivering reliable results and reducing AI hallucinations.
Loved by Data Scientists
Join thousands who landed jobs at top tech companies
“StrataScratch has been super helpful. I started with barely being able to finish an easy SQL query to no problem solving most of the medium level in just a few days.”
“StrataScratch is hands down the best platform if you are preparing for or am working as a data analyst/scientist/engineer. Happy to share that I have gotten an offer from Amazon as a Data Analyst.”
“I really wanted to get into data analytics and data science but never really understood the importance of SQL. The questions are really very realistic and I was asked similar questions in my coding rounds.”
“SQL is something that is super important and plays a key role in Data Analysis. I used to practice 2-3 SQL problems everyday. The discussion forum and solution with clear understanding cleared my barriers.”
“StrataScratch and the community really helped me prep for the interview — I ended up getting the Data Scientist internship!”
“StrataScratch is awesome! It's the first place I found that allows you to use python in addition to SQL. The Facebook questions were quite similar to the ones that I saw in my interview today.”
Level Up Your Data Skills
Free guides, tutorials, and resources from our team
Simplifying Python’s IF and AND Statements
Python IF and AND statements help you write clear, correct conditional logic by safely combining checks, handling edge cases, and keeping your code readable, efficient, and maintainable.
Sara Nobrega -
Understanding FLOOR and CEILING Functions in SQL
We explore fundamental concepts of FLOOR and CEILING functions in SQL and demonstrate their value for interview preparation and handling data at scale.
Shivani Arun -
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