Course Plans

Quality courses created by data scientists in FAANGs.


  • AB Testing Course
  • Case-In-Point Course
  • SQL Drills
  • Statistics Question Bank
  • ML Question Bank
  • * Only 1 Lesson per each course


$ 47

  • AB Testing Course
  • Case-In-Point Course
  • SQL Drills
  • Mock Interview Videos
  • Statistics Question Bank
  • ML Question Bank
  • Slack Study Group

Premium Features

AB Testing Course

Get access to 12+ lessons on AB testing covering key concepts and interview questions asked in product data science interviews.

Case in Point

20 case problems (i.e. How do you segment Apple customers?) with solutions written by data scientists in FAANGs.

Mock Interview Videos

3 x 1-hour recordings of mock interviews with real candidates preparing for DS/MLE interviews and experienced interviewers.

Question Bank

10 statistics and machine learning questions commonly asked in top companies.

SQL Drills

Drill with 5 SQL practice problems similar to ones asked in technical screenings.

Slack Study Group

Network with a community of job candidates and data science instructors who work in FAANGs.

Learning Objectives

Fast track your success in DS+MLE interviews with quality contents.

Case in Point

Get access to case problems posed in data science and MLE interviews at top companies. Learn how to ace questions such as “how would you segment Apple customers meaningfully?” and “how would you predict customer lifetime value (CLV) at Amazon?” The solutions include a candidate demonstration and interviewer’s solution. Topics covered are:

  1. Statistics
  2. Product-Sense (i.e. Metrics, AB Testing, Analytics)
  3. Machine Learning 

Mock Interviews

Watch 60-minute mock interviews based on technical rounds in top companies. The mock interviewers work at FAANGs, and interviewees are candidates preparing for interviews at top companies. 

Slack Community

Never prep alone. Harness our Slack community to network with fellow interviewees and instructors who work in FAANG companies and prepare for interviews together.

Meet the Instructor

Learn from the instructor who landed roles in PayPal and Google.

Dan Lee

Data Scientist@Google (& Ex-PayPal)

Frustrated about data science and ML engineer interviews? As someone who had been a candidate myself, I share your frustration. That’s why I created – a one-stop shop for preparing for data science and ML engineer interviews. After working five years as a data scientists across three companies – Booz Allen Hamilton, PayPal and Google, I have curated top-notch interview content designed to accelerate your progress in interviews at top companies. Work with me and land your dream role =D


The AB testing course contains 12+ core lessons (i.e. metric selection, sample size determination, decisioning) on online experimentations. The lessons are tailored towards job seekers preparing for product data science interviews.

The Case In Point includes business case problems asked in technical screenings. The problem sets include statistics, product and machine learning design. Each problem is thoroughly fleshed out with candidate illustrations and interviewer assessments.

The mock interviews are emulated based on technical screens at top startups and FAANGs. Each 60-minute video includes 40 minutes of Q&A and 20 minutes of solutions. The mock interview candidate is an actual candidate preparing for interviews at top companies, and the interviewer is a data scientist or machine learning engineer in FAANG companies.

New contents are published on the first day of every month.

Yes,  send an email to He will get back to you within 1 to 2 business days.