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A complete guide towards Data Science interview preparation

There has never been a better moment to start a data science career. Data scientists earn a median salary of almost $100,000 per year, making them one of the most profitable tech positions. It is predicted that the number of data science jobs would increase by 30% this decade.

However, you must succeed in your data science interview before you can begin to earn that six-figure salary. Furthermore, this type of interview involves more than just showcasing your technical expertise.

This article was created to help you understand what to expect from your data science interview and how to prepare for it. To find out how to ace the interview and get the job of your dreams, keep reading.

Create a powerful resume.

The first and most crucial thing is to have a strong résumé. Your resume needs to appropriately reflect your skills and experience. Under- or over-representing yourself on your resume is bad. Additionally, your CV should be presented in an easy-to-read and shareable way.

Among the crucial components of a strong resume are,

  • utilising a suitable resume template
  • Including a profile picture at the start
  • Using bullet points
  • maintaining a standard format
  • Keeping typos to a minimum
  • Making statements that have effect with the Google XYZ formula
  • Personalizing your cover letter and resume

Make a beautiful portfolio website.

Possessing an excellent portfolio is crucial. You won’t even be able to acquire an internship position with projects using the Titanic dataset. So please take your time in selecting a few good projects. A quality project will benefit your schooling as well as your employment search.

It’s acceptable for a candidate to go into their first job interview with minimal technical experience in many IT-related fields. They will undergo an attitude test before receiving on-the-job training. But keep in mind that positions in data science are not among them. Frequently, the data science teams are very small. Data scientists primarily need to be independent and possess a natural aptitude for problem-solving. A strong project portfolio might serve as evidence of these abilities.

Making a website for a personal portfolio is simple. Check out the video below if you want to learn how to create a personal portfolio website for free. I’ve included free instructions for creating a website for your personal portfolio. The GitHub pages served as the foundation for this individual website.

Having a range of projects in your portfolio is also crucial. The old Kaggle dataset can no longer be used to demonstrate a project. There is a tonne of data available. The datasets of numerous organisations and governmental bodies are published. Unstructured data containing a tonne of important information can be found in abundance on social media. Finding a distinctive project for your portfolio is now simple. Popular Kaggle projects cannot therefore be of any assistance in finding employment.

Get ready for the coding exams.

To be considered for a shortlist, you only need a strong résumé and portfolio. Nowadays, it is rather typical for the interview process to include a case study or a code qualification test. Platforms exist that can aid in technical skill testing and improvement.

R and Python programming

You can learn and develop your programming abilities for data science at Datacamp and Codecademy. They offer outstanding R and Python courses. They do facilitate SQL learning. Both of these are interactive tools that greatly simplify and widen access to learning to code.

These platforms offer beginner-friendly, simple-to-learn programming classes. These platforms are unquestionably worth trying for those who are new to programming.


A software called LearnSQL is dedicated to developing and evaluating SQL abilities. Free scenario-based coding challenges are many there. To learn SQL, these will be very helpful. It has never been easy to learn SQL. Because you need access to a real-world database to develop practical SQL skills. These platforms realistically recreate the challenges in real life and make the scenarios seem plausible. resulting in a fantastic educational experience.


There are numerous additional businesses that share some actual data and pose various commercial queries. These aid them in evaluating your technical proficiency. your capacity to comprehend and resolve some difficulties from the actual world. The only way to be ready for this is by using Kaggle. On Kaggle, various data science challenges are hosted. You will learn how to solve any new data science problem by working with Kaggle datasets.

Reaffirm the fundamental ideas

Certifications and course completions alone won’t land you a job. You must be well-versed in the fundamental ideas of data science. Here are some incredible articles with references to typical terms and inquiries made during data science interviews.

Possess a profile picture

Each of us frequently forgets to mention some of our most significant accomplishments during the interview. Some of the fascinating projects we have worked on have a tendency to be forgotten. Consequently, I would highly advise creating a profile snapshot that would list all of your contributions, successes, and initiatives. This is quite beneficial because we attempt to keep the material on resumes to a minimum. The profile snapshot can include all the specifics of the project you worked on. As a result, reviewing them fast before the interview will be simple.

Read up on the business.

You must be familiar with both the organisation and the position you are applying for. All the information needed to understand the role and requirements may be found in the job description. You must still read about the groups’ objectives. Reading from the company’s website is the greatest approach to learn more.

  • its webpage
  • their tech website
  • social media sites like LinkedIn and Twitter

FAQs Regarding Interview Preparation for Data Science

In preparation for a data science interview, what should you read?

Make sure you are able to respond to inquiries about statistics, probability, data manipulation, and a few programming ideas. Additionally, make sure you’re prepared to go into detail about your portfolio.

How much time should I devote to my data science interview prep?

Give yourself at least a month to prepare your portfolio, review frequently asked questions, and brush up on your technical knowledge. Use the last week to rehearse the sample questions that you’ve found most difficult during your studies.

How Many Interview Rounds Are Usually Required for a Data Science Position?

The majority of data science interviews go three to five rounds and ask questions about technical proficiency, cultural fit, and soft skills.

You may even like to read: 5 Reasons to Learn Python in 2022

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