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ByteDance Data Scientist Interview Questions and Answers

Updated 3 Dec 2024

ByteDance Data Scientist Interview Experiences

1 interview found

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Not Selected

I applied via Job Portal and was interviewed in Nov 2024. There were 3 interview rounds.

Round 1 - Coding Test 

SQL and Python coding test

Round 2 - Technical 

(2 Questions)

  • Q1. Bagging vs Boosting
  • Q2. Overfitting and Underfitting in GBDT
Round 3 - HR 

(2 Questions)

  • Q1. Questions on Recent project
  • Q2. Deep Learning vs classical ML

Interview questions from similar companies

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

SQL - shared question on the screen and asked to code in SQL

Round 2 - Technical 

(1 Question)

  • Q1. Nth highes salary
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Case Study 

Case study design oka6y

Round 2 - One-on-one 

(2 Questions)

  • Q1. Case study explain
  • Q2. Ml concept advance

Data Scientist Interview Questions & Answers

Zepto user image Anubhav Kesari

posted on 20 Nov 2024

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(3 Questions)

  • Q1. Questions on Past Project
  • Q2. SQL Dense Rank - also having the option to do in Pandas
  • Q3. Pandas groupby on a dataset given - required to calculate group wise yoy rate of a column
Round 2 - Technical 

(2 Questions)

  • Q1. Past project ( which he chose , he chose my very first project , which I had forgotten) so ended up screwing it
  • Q2. SQL / Pyspark question - difficult question
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - HR 

(2 Questions)

  • Q1. What do you know about Uber?
  • Q2. Went over my current role
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(1 Question)

  • Q1. Coding and data structure
Round 2 - Technical 

(1 Question)

  • Q1. ML Breadth and depth
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Tell me about your projects?
  • Q2. How do you approach the project if you are using logistic regression model?
  • Ans. 

    Approach involves data preprocessing, model training, evaluation, and interpretation.

    • Perform data preprocessing such as handling missing values, encoding categorical variables, and scaling features.

    • Split the data into training and testing sets.

    • Train the logistic regression model on the training data.

    • Evaluate the model using metrics like accuracy, precision, recall, and F1 score.

    • Interpret the model coefficients to under...

  • Answered by AI
Round 2 - HR 

(2 Questions)

  • Q1. What are you future goals?
  • Q2. What would you do if your interested field doesnt have any work in the company?
  • Ans. 

    I would seek opportunities to apply my skills in related fields within the company.

    • Explore other departments or teams within the company that may have projects related to my field of interest

    • Offer to collaborate with colleagues in different departments to bring a new perspective to their projects

    • Seek out professional development opportunities to expand my skills and knowledge in related areas

  • Answered by AI

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Questions related to basic coding were asked, and some background on projects and discussions alongside maths and statistics concepts

Round 2 - Technical 

(1 Question)

  • Q1. Questions related to projects done at my previous company
Round 3 - Technical 

(2 Questions)

  • Q1. Questions related to my work at previous company
  • Q2. ML system design use case type of discussion

Interview Preparation Tips

Interview preparation tips for other job seekers - Make sure to be good at coding wrt DSA basics like array, strings, stacks and recursion.
Also practice some level of basic PyTorch stuff and specially Bert architecture (in terms of code)
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
Not Selected
Round 1 - Technical 

(2 Questions)

  • Q1. Basic Recommendation System Questions
  • Q2. A B Testing Questions
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Simple mediam DSA style questions around ML

ByteDance Interview FAQs

How many rounds are there in ByteDance Data Scientist interview?
ByteDance interview process usually has 3 rounds. The most common rounds in the ByteDance interview process are Coding Test, Technical and HR.
What are the top questions asked in ByteDance Data Scientist interview?

Some of the top questions asked at the ByteDance Data Scientist interview -

  1. Overfitting and Underfitting in G...read more
  2. Questions on Recent proj...read more
  3. Deep Learning vs classical...read more

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ByteDance Data Scientist Interview Process

based on 1 interview

Interview experience

4
  
Good
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