The products you need to succeed in your next job interview!

Created by expert interviewers
Your prep materials are crafted by seasoned professionals with real-world hiring experience.They know what hiring managers look for—because they’ve sat in the interviewer's seat and they still do!

Boosts Your Interview Success
Build confidence and clarity with focused guidance designed to help you pass. Customers report dramatically improved performance and job offers.
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Frequently Asked Questions
Why should I buy your products when I can find interview questions online for free?
This is the most important question. Free resources are scattered, often outdated, and lack a coherent structure. You can spend 100+ hours sifting through blogs, forums, and YouTube videos, or you can invest in a single, curated resource built by an actual hiring manager.
We provide two things you can't get for free:
Structure: Our eBook provides a battle-tested framework, connecting concepts and teaching you how to think, not just what to memorize.
Expertise: Our content and mock interviews are delivered by a data science expert who has conducted hundreds of real interviews. You get insights into what interviewers are actually looking for.
Our goal is to save you your most valuable asset: time.
Who is behind DataDrivenPrep and what are their qualifications?
DataDrivenPrep was founded by a senior data science professional with extensive experience at top tech companies. Our lead consultant has a background in building and leading data teams, has personally conducted over 200 data science interviews, and has a deep understanding of the hiring bar at FAANG, startups, and fintech firms. This isn't theoretical advice; it's a playbook from the other side of the hiring table.
How does the Mock Interview work? What will I get?
The mock interview is a 75-minute, live 1-on-1 video session designed to simulate a real, high-pressure interview round. The process is:
- Booking: You book a slot and tell us which area you want to focus on (e.g., SQL & Product Sense, or ML System Design).
- The Interview (60 mins): The interviewer will conduct a realistic interview, asking you challenging questions and asking you to code in a shared editor or talk through a design on a virtual whiteboard.
- Live Feedback (15 mins): The last 15 minutes are dedicated to direct, actionable feedback. We'll break down your strengths, weaknesses, and provide a clear, prioritized list of what to work on to pass your real interviews.
You will leave the session with a clear understanding of your current level and a concrete plan for improvement.
Who will be my interviewer for the mock session?
Your interviewer will be a seasoned data science professional who is also an xperienced interviewer at a reputable tech company. This is our core promise. You won't be speaking with a tutor who has never hired anyone; you'll be practicing with an expert who makes hiring decisions as part of their job.
What format is the eBook in, and how do I receive it?
The eBook is delivered as a high-quality, DRM-free PDF file. Immediately after your purchase is confirmed, you will receive an email with a secure link to download your copy. The PDF format allows you to read it on any device—laptop, tablet, or phone—and even print sections for offline study.
Can I focus my mock interview on a specific topic, like SQL or System Design?
Absolutely. In fact, we encourage it. The most effective mock interviews are targeted. When you book your session, you can specify that you want to focus exclusively on a SQL coding round, an ML System Design case, an A/B testing deep dive, or any combination of topics you feel weakest in.
What is your refund policy?
We are confident in the value of our products.
- For the eBook: Due to the digital nature of the product, we generally do not offer refunds once it has been downloaded. However, if you are unsatisfied, please contact us within 7 days, and we'll work to make it right.
- For Mock Interviews: You can receive a full refund if you cancel at least 48 hours before your scheduled session. Cancellations within 48 hours are non-refundable, as our interviewers block out their professional time for you.
I have a question that isn't answered here. How can I contact you?
We're happy to help. The best way to reach us is by emailing contact@datadrivenprep.com. We aim to respond to all inquiries within one business day.
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