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LeetCode
leetcode.com › discuss › interview-question › 812131 › amazon-data-scientist-interview-prep
Amazon Data Scientist interview prep - Discuss
August 25, 2020 - I will have phone interview (technical 1 hour) with Amazon for DS role for Alexa shopping team. Also I'm new in LeetCode, where can I start to prepare for this technical interview? What I found in "Explore" are very much SW questions rather than data science.
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LeetCode
leetcode.com › discuss › interview-experience › 324656 › amazon-data-science-intern-seattle-offer
Amazon | Data science Intern | Seattle [Offer] - Discuss
After being scheduled for an interview with amazon, i solved all the easy top amazon questions on leetcode, about 60% of the medium questions(remeber to always check their time and space complextity and try to come up with a solution that has the best of each). I solved a few hard questions on leetcode and a lot of data sctructure questions too(my goal was to do atleast 5 codes everyday).
Discussions

Amazon Applied Scientist Leetcode Interview

Same coding questions as an sde with additional 1-3 rounds of domain based interview ( robotics, ML, etc.)

More on reddit.com
🌐 r/leetcode
13
12
January 9, 2020
What is the LeetCode for DS?

LeetCode for Python questions, easy gets you past coding rounds at most companies, DataLemur for SQL interview prep, Cracking the PM Interview is good for product data science questions and more open-ended business-y DS case problems. For ML interview questions, just knowing the most important concepts + terminology from Intro to Statistical Learning is good (most interviews ask about classical techniques, so don't worry if you aren't a deep learning pro). Practical Stats is good for Prob/Stat conceptual questions (but doesn't exactly map to what interviews test... unfortunately at FAANG + Wall Street you will find the occasional probability brain teaser).

You can also check out the book "Ace the Data Science Interview" on Amazon, which is like "Cracking the Coding Interview" but for Data Science & ML interviews. It covers all the topics mentioned above, but I'm a tad biased since I wrote the book!

More on reddit.com
🌐 r/datascience
83
511
March 24, 2020
Need Advice: Applied scientist Interview at Amazon
Don’t worry about Leetcode man, you got bigger fish to fry. Leetcode should be least of your worries tbh. Focus on ML system design especially on the field you come from or from the one you are applying for. Broadly speaking usually it’s  recommender system Fraud detection/Anomaly detection  Or vision/NLP if that is your focus Secondly, for coding try to code up  Linear regression  Logistic regression  knn  Simple neural network  Activation functions  Objective functions In some of those you can use PyTorch but just for autograd (look up questions online) Here are questions https://huyenchip.com/ml-interviews-book/contents/part-ii.-questions.html For ML breadth Brush up your basics can you draw how would the parmeters would  look like for a decision tree with just 2 params?  What about for logistic regression  How do you modify logistic regression for quadratically separable data? This is what you need to study More on reddit.com
🌐 r/leetcode
20
98
August 5, 2024
Amazon Applied Scientist interview experience [offer accepted]
Bro this is so difficult and I wanna look for ML roles 😑😑😭😭 All the best buddy More on reddit.com
🌐 r/leetcode
26
76
April 11, 2025
People also ask

What is the interview process like for a Data Scientist at Amazon?
Common stages of the interview process at Amazon as a Data Scientist according to 185 Glassdoor interviews include:
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glassdoor.com
glassdoor.com › Interview › Amazon-Data-Scientist-Interview-Questions-EI_IE6036.0,6_KO7,21.htm
Amazon Data Scientist Interview Experience & Questions | Glassdoor
How long does it take to get hired as a Data Scientist at Amazon?
Candidates applying for Data Scientist roles take an average of 28 days to get hired, when considering 185 user submitted interviews for this role. To compare, the hiring process at Amazon overall takes an average of 28.04 days.
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glassdoor.com
glassdoor.com › Interview › Amazon-Data-Scientist-Interview-Questions-EI_IE6036.0,6_KO7,21.htm
Amazon Data Scientist Interview Experience & Questions | Glassdoor
Is it hard to get hired as a Data Scientist at Amazon?
Data Scientist applicants have rated the interview process at Amazon with 3.2 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 47% positive. To compare, the company-average is 57.6% positive. This is according to Glassdoor user ratings.
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glassdoor.com
glassdoor.com › Interview › Amazon-Data-Scientist-Interview-Questions-EI_IE6036.0,6_KO7,21.htm
Amazon Data Scientist Interview Experience & Questions | Glassdoor
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LeetCode
leetcode.com › discuss › interview-experience › 1173618 › amazon-data-scientist-intern
Amazon Data Scientist Intern - Discuss
April 23, 2021 - Have been doing leetcode for months now and the experience totally helped me answer the python questions. Do not ignore Sql questions (or Database questions) Research on the interview questions and prepare them Do not try and learn something new.
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LeetCode
leetcode.com › discuss › interview-question › 456001 › amazon-data-scientist-tech-interview-sql-coding-questions
Amazon Data Scientist Tech Interview SQL + Coding ...
1. have a orders data, product data, write an sql to return the product_name that ordered during last 1 week a. select distinct product_name b. from orders o c. join product p d. on o.product_id = p.product_id e. where order_date > DATEADD(order_date, -7, GETDATE()) 2.
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LeetCode
leetcode.com › discuss › interview-question › 1776744 › Amazon-Data-Science-Internship
Amazon Data Science Internship - LeetCode Discuss
February 16, 2022 - Hey, Has anyone here given their internviews for the Amazon Data Science Internship? I would like to know more about the process and what to expect from these interviews.
Find elsewhere
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StrataScratch
stratascratch.com › blog › amazon-data-scientist-interview-guide
Amazon Data Scientist Interview Guide - StrataScratch
June 22, 2021 - LeetCode is a great resource to ... people who are really good at coding, as it is a tech company after all! These questions are usually based on SQL and Python for data scientist interviews......
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Glassdoor
glassdoor.com › Interview › Amazon-Data-Scientist-Interview-Questions-EI_IE6036.0,6_KO7,21.htm
Amazon Data Scientist Interview Experience & Questions | Glassdoor
2 weeks ago - 268 Amazon Data Scientist interview questions and 263 interview reviews. Free interview details posted anonymously by Amazon interview candidates.
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Medium
medium.com › datainterview › crack-the-amazon-data-scientist-interviews-ex-faang-data-scientist-78189a5a689e
Crack the Amazon Data Scientist Interviews | Ex-FAANG Data Scientist | by Dan Lee | DataInterview | Medium
September 3, 2021 - For data scientists, you can expect easy algo. questions that require string and/or integer manipulations. In addition, expect data manipulation questions that require you to use vanilla code or a third-party library to wrangle a table. These question styles are similar to SQL table manipulation given that you are using a programming language of your choice, such as Python and R. Algorithms and Data Structures — Leetcode-style questions
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StrataScratch
stratascratch.com › blog › how-to-use-leetcode-for-data-science-sql-interviews
How To Use LeetCode For Data Science SQL Interviews - StrataScratch
LeetCode has all the coding questions ... concepts like data structures and search algorithms. So, is LeetCode designed to prepare for data science interviews? Let’s find out. As an aspiring data scientist, you might have a question: Is LeetCode for data science...
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IGotAnOffer
igotanoffer.com › blogs › tech › amazon-data-science-interview
Amazon Data Scientist Interview (process, questions, prep) - IGotAnOffer
November 18, 2024 - Expect interviewers to test you on SQL, some modeling, and data structures and algorithms (DSA). Most candidates report solving modeling questions with Python or R and solving data structure and algorithm questions using Python.
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LeetCode
leetcode.com › discuss › interview-experience › 1728249 › interview-experience-amazon-data-scientist-ii-intern
Interview Experience | Amazon | Data Scientist II Intern
Solved 7/7 debugging questions. The coding questions were easy - 1 solved with 22/22 test cases passed, other with 13/16 test cases passed. I must have done well (relatively) in the coding test which is why I was the first candidate to get ...
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Quora
quora.com › What-is-the-best-site-for-preparing-for-a-data-science-interview
What is the best site for preparing for a data science interview? - Quora
Answer (1 of 16): The study of knowledge extraction from data is known as data science. To extract knowledge from data, employ a range of techniques from several disciplines, including data engineering, pattern matching, signal processing, mathematics, probability, machine learning, computer prog...
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LeetCode
leetcode.com › discuss › interview-experience › 784569 › amazon-data-scientist-offer
Amazon - Data Scientist (Offer) - Discuss
August 14, 2020 - Anyways, really happy I got an offer at Amazon and will now proceed to share my experience. ... The position did require a maters degree in some science discipline with a PhD preferred preference.
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LeetCode
leetcode.com › discuss › interview-experience › 1585287 › amazon-msft-google-apple-fb-zoom-applied-scientist-multiple-sep-21-offer-rest-reject
Amazon, MSFT, Google, Apple, FB, Zoom | Applied Scientist
November 18, 2021 - Talked through different data problems and alleviations, model and metric choices. HM, team - 2. Current company alumn, so we had a lot of common research interests and background. ... Coding: Very similar to word break 1 and 2. Did this with backtracking, code walk through and example so we had some time. Reverse interview: spent a lot of time getting to know the teams work, expectation, etc
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Quora
quora.com › Is-LeetCode-that-important-for-a-data-scientist-in-technical-interviews
Is LeetCode that important for a data scientist in technical interviews? - Quora
Answer (1 of 2): Yes, it's important. Maybe even more important than for SWE actually, but the bar is lower. Most application processes for data science, and related things like quant finance, have online assessments and coding rounds. Knowing complexities and some DSA is important. In data sci...
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Reddit
reddit.com › r/leetcode › need advice: applied scientist interview at amazon
r/leetcode on Reddit: Need Advice: Applied scientist Interview at Amazon
August 5, 2024 -

Hey everyone

After clearing the phone screen round, I got a call regarding the Applied Scientist virtual onsite round at Amazon.

It will probably be a 5 hour onsite (details are yet to be discussed with the recruiter). This sub has extensive information about the leetcode style questions but I wanted to ask the MLEs, Applied Scientist and Data Scientists on this sub as to what to expect in the ML depth and breadth round and Business application round. And how to prepare for each of these rounds? If you could share your some resources that would be helpful.

Also below are my leetcode stats, from here on I will focus mainly on Amazon but any other suggestions are appreciated.