Hello guys, if you are preparing for Data Science and Machine Learning interviews and looking for best resources for your preparation then you have come to the right place.
Earlier, I have shared best System Design Courses and best Machine Learning Courses and in this article, I Am going to share best online courses you can join to prepare for Data Science and Machine Learning interviews.
In this AI age, Data science and Machine learning are two developing and in-demand, hot technologies. Today, there is a huge job market for those individuals who are well-acknowledged in data science and machine learning. But these two technologies are complex and require a lot of effort and time.
But at the same time, It is not easy to master data science and machine learning. Data science covers an extensive amount of domains. It includes business analysis, data visualization, data analysis, financial analysis, image processing, and more. You have to choose the domain. Machine learning is also referred to as part of data science.
When it comes to your Data Science or Machine Learning interview preparation, you will no doubt find lots of good material around how different machine learning models work, which algorithms to use when, and so on.
But, it's not easy to find information on how to approach a Machine Learning problem from a system design perspective.
In the Machine Learning interview, especially if you’re more experienced like 3 to 5 years experienced, you’ll be most likely be given open-ended problems and will be expected to build end-to-end machine learning systems to solve those problems.
System design is arguably the most important part of your Machine Learning interview and is a determining factor in your hiring ‘level’, which can make a big different in your package and salary, but you shouldn't worry, I have include courses for System Design with Machine Learning and if you need more material, I have also shared best System design books and best System Design courses.
Companies, both big and small likes to hire people that can confidently talk through designing systems and articulate the trade-offs they’re making.
Additionally, as more and more companies inject Machine Learning into their products, even if you just want to excel at system design interviews, it’s valuable to speak about ML functionality as more than just a black box. Having that ability is a surefire way to impress your hiring manager.
Machine learning is also a vast domain. Artificial intelligence, Python, linear algebra, calculus, etc are required for machine learning. Well, it is a complicated technology but it is worth learning.
As mentioned earlier, there is a huge market for it. But the interviews are quite tough.
One should properly prepare before appearing for a data science and machine learning interview. In this article, we will list the best online courses that will help you prepare for data science and machine learning interviews.
By the way, if you are in a rush and just want to start with one course, then start with the Data Science Interview Course by Exponent, one of the most reputable sites when it comes to interview preparation. This course covers not only data science concepts but also interview tips and mock videos which will help you prepare better.
When it comes to joining any Exponent course, you can either take their monthly ($79 per month) or yearly subscription ($14 per month). Since there is a huge price difference between their monthly and yearly plan I always recommend going for the yearly plan because you get more time to try their various interview courses on Data Science, ML, and System Design for 1/6th of the price.
9 Best Online Courses for AI and Machine Learning Interviews in 2026
Without wasting any more of your time, here is a list of the best online courses to prepare for the Data Science and Machine Learning interview. This list contains the best courses from Udemy, tryExponent.com, and Educative.io, one of the best platforms to prepare for tech interviews.
All these courses are very affordable and trusted by thousands of developers around the world to prepare for Machine learning interviews.
1. Grokking the Machine Learning Interview
This is one of the most popular machine learning interview preparation courses at Educative, a new online learning platform that provides interactive text-based courses and allows you to run code right from your browser.
In this course, the instructor focuses on the important concepts that are required to crack a machine-learning interview. It is inspired by real-world machine-learning interviews.
It covers the most popular interview questions asked at big tech companies. Instead of answering trivia-style questions, you will work through open-ended problems to design real-world machine learning systems.
Requirements
- Basic understanding of Python.
- Basic knowledge of machine learning.
It is an intermediate-level course and you need to have good knowledge of Machine Learning. By the end of this course, you will be armed with the knowledge to excel in your ML interview.
Here is the link to join this course — Grokking the Machine Learning Interview
By the way, you can either join this course individually or you can take an educative subscription for just $14.9 per month (recommended) to get access to their 1250+ high-quality, AI powered, text-based, interactive courses to learn key skills for coding interviews, software development, and technology.
2. Machine Learning System Design Interview
With AI and ML dominating tech hiring, this book covers machine learning pipelines, model serving, data storage, and real-time inference. It’s an essential read for AI/ML engineers aiming at companies like Google, OpenAI, or Meta.
Here is the link to get this book — Machine Learning System Design Interview
By the way, instead of buying this ML System Design book, you can also purchase lifetime membership of ByteByteGo platform. It will not only give you access to this book but his courses and several case studies and articles on Genreative AI and Machine Learning System design.
You can also try it now with 50% OFF
3. Data Science Career Guide — Interview Preparation — Udemy
This is a best-selling course at Udemy for data science interview preparation. It is not only about interview preparation though, but it is also a guide for those who want to start a career in data science. In this course, you will learn how to create a data science resume.
Requirements
- An understanding of Probability and Statistics.
- Programming Experience in either Python or R.
- Experience in SQL.
- An understanding of Machine Learning Algorithms.
It has several interviews and practice questions that will surely boost your confidence for the actual interview. It is a four-hour-long course. Only those who have a good understanding of data science and machine learning should join this course.
Here is the link to join this course — Data Science Career Guide — Interview Preparation
4. Data Science Interview Course by tryExponent
When it comes to interview preparation, tryExponent.com is a reputed name. I have taken their System Design course and mock interviews and I must say that they are good at it.
So, when I found that they have a great Data Science Interview course, I immediately jumped on it and I must say that I am not disappointed.
This 52-hour long course covers everything you need to crack a Data Science interview like Data Science concepts, SQL, statistics, data communication, coding, machine learning, and take-home assignments.
Here are the things you will get in this course:
- Interview rubrics, frameworks, and statistics review
- 60+ interactive practice questions
- 25+ full mock interview videos
This course is taught by top Data Scientists at Google, Amazon, Meta, and top startups like Apurvaa Subramaniam, Shreyas Lakhtakia, Angelica Chen, Tyler Shang, and Joshua Bernhard Staff Data Scientist, ex-Houzz
Overall a great course to prepare for Data Science interviews. You will not just understand what types of statistics questions are asked in data science interviews and what interviewers are looking for.
Here is the link to join this course — Data Science Interview course
When it comes to joining any Exponent course, you can either take their monthly ($79 per month) or yearly subscription ($14 per month). Since there is a huge price difference between their monthly and yearly plan I always recommend going for a yearly plan because you get more time to try their various interview courses on Data Science, ML, and System Design for 1/6th of the price.
And, if you are preparing for Machine Learning Interviews then you can also check their ML interview prep course along with this one to improve your chance of cracking interview more. This includes ML system design as well.
5. SQL for Tech and Data Science Interviews
This is a brand new course at Udemy for data science and machine learning preparation. In this course, the instructor goes through different SQL interview questions and mock interviews, explaining each of them.
These questions are selected very carefully by the instructor and resemble the actual interview questions. Choose this course if you want to test your SQL knowledge for data science.
You will also learn Tina’s 5-step framework to acing your SQL interview
Requirements
- Knowledge of data science and machine learning.
- Knowledge of SQL
The total video content of this course is nearly 2.5 hours and this is a great resource to check your SQL skills and level them up before your Data Science and Machine Learning Interviews.
Here is the link to join this course — SQL for Tech and Data Science Interviews
6. Machine Learning for Interviews & Research and DL basics
Another popular course at Udemy is for those individuals who want to test their technical machine-learning knowledge. Throughout the fifty lectures, the instructor covers almost every important concept required for a machine learning technical interview.
Requirements
- High school-level mathematics.
- Basic knowledge of data science.
- Basic knowledge of machine learning.
The total video content of this course is five hours. It is an intermediate-level course. Talking about social proof this course has on average 4.3 ratings and more than 4000 students have joined this course to prepare for machine learning interviews.
Here is the link to join this course —Machine Learning for Interviews & Research and DL basics
7. Machine Learning System Design [Educative]
This is another exciting Machine Learning course from Educative.io that will teach you everything you need to know about the basics of machine learning system design in the shortest time possible.
The course will also teach you everything you need to know about machine learning and system design. It will help you understand the state of the practice on model techniques along with best practices in applying ML models in production at scale.
Course Duration: 1 hour 30 minutes
Course Rating: 4.6 stars out of 5
Course Instructor: Khang Phem
Course Price: $20 per month
Once you’re done with the course, you will be able to apply and leverage knowledge from top researchers at tech companies. You will have up-to-date knowledge in model techniques from hundreds of the latest research and industry papers.
There is even a great chance that the interviewers will be surprised at the depth of your knowledge.
Here is the link to join this course — Machine Learning System Design
8. The Data Science Course 2026: Complete Data Science Bootcamp
With over seventy-eight thousand students enrolled, this is the most popular data science course at Udemy. This course is for those who want to learn data science from scratch.
In this course, the instructor covers all important data science concepts such as statistics, mathematics, python, advanced statistics with Python, machine learning, deep learning, and many more.
Requirements
- No pre-requisites.
It is a long course with a total video content of nearly twenty-nine hours. It is a beginner-level course and a great resource for learning about Data Science from scratch and in-depth.
You can use this to not only prepare for a Data Science interview but also to learn Data Science from scratch.
Talking about social proof, this is one of the most popular data science courses on Udemy and trusted by more than 430K students and it has on average 4.6 ratings from close to 100K participants.
Here is the link to join this course — The Data Science Course 2026: Complete Data Science Bootcamp
9. Generative AI System Design Interview
The newest addition to ByteByteGo’s library, this guide is perfect for 2026’s AI-driven job market. Learn how to design systems that power large language models, image generation, and conversational AI tools.
Here is the link to get this book — Generative AI System Design Interview
By the way, instead of buying the book, you can also purchase lifetime membership of ByteByteGo platform. It will not only give you access to this book but his courses and several case studies and articles on Genreative AI and Machine Learning System design.
You can also try it now with 50% OFF
That’s all about the best online courses to prepare for Data Science and Machine Learning interviews in 2026. So these are the five carefully selected courses for those who want to prepare for a data science and machine learning interview.
Some of these courses have technical interview questions and hands-on while some are tutorials. Go through each course and choose accordingly.
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Thanks for reading this article so far. If you like these best Data Science and Machine Learning interview courses then please share them with your friends and colleagues. If you have any questions or feedback, then please drop a note.
P. S. — If you are keen to learn Data science and Machine Learning in-depth then you can also check out this Machine Learning A-Z™: Hands-On Python & R In Data Science course by the SuperDataScience team and Krill Eremenko on Udemy I highly recommend you to join the this course to beginners and experienced developers.
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