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HCLTech Data Science Engineer Interview Questions and Answers

Updated 8 Nov 2023

HCLTech Data Science Engineer Interview Experiences

1 interview found

Interview experience
1
Bad
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Job Portal and was interviewed in Oct 2023. There were 4 interview rounds.

Round 1 - Coding Test 

Coding test is important

Round 2 - Coding Test 

Most important in coding test

Round 3 - Group Discussion 

Group discussion is share the projects many people one idea

Round 4 - HR 

(1 Question)

  • Q1. Last round in HR round in salary details joining in company

Interview questions from similar companies

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed in Aug 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Difference between fact and figure.
  • Ans. 

    Fact is a statement that can be proven true or false, while figure is a numerical value or statistic.

    • Fact is a statement that can be verified or proven true or false.

    • Figure is a numerical value or statistic.

    • Facts are objective and can be verified through evidence or research.

    • Figures are quantitative data used to represent information.

    • Example: 'The sky is blue' is a fact, while 'The average temperature is 25 degrees Cel

  • Answered by AI
  • Q2. Explain data modelling
  • Ans. 

    Data modelling is the process of creating a visual representation of data to understand its structure, relationships, and patterns.

    • Data modelling involves identifying entities, attributes, and relationships in a dataset.

    • It helps in organizing data in a way that is easy to understand and analyze.

    • Common data modelling techniques include Entity-Relationship (ER) diagrams and UML diagrams.

    • Data modelling is essential for da...

  • Answered by AI

Skills evaluated in this interview

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

I applied via Company Website and was interviewed in Jun 2024. There were 2 interview rounds.

Round 1 - Coding Test 

2 coding questions asked in python

Round 2 - Technical 

(2 Questions)

  • Q1. Basic ML algorithms
  • Q2. Deep learning based questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Study well the basics and projects
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Python basics on data operations

Data Science Engineer Interview Questions & Answers

Cognizant user image Aila Chanakya Darahas

posted on 16 Feb 2024

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Good execellnt and well done

Round 2 - HR 

(2 Questions)

  • Q1. Tell me your self
  • Q2. Tell me why cogniznt
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
Selected Selected
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - One-on-one 

(3 Questions)

  • Q1. Always prepare projects u have worked on in STAR format.
  • Q2. Tell me about yourself .
  • Q3. Explain any 4 projects in STAR format
  • Ans. 

    Developed a recommendation system for an e-commerce website

    • Used collaborative filtering to recommend products to users

    • Implemented the system using Python and Apache Spark

    • Evaluated the system's performance using precision and recall metrics

    • Improved the system's performance by incorporating user feedback

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep your answers in structural way.
And explain projects in STAR format.

Data Science Engineer Interview Questions & Answers

IBM user image Arunanshu Chakraborty

posted on 21 Jul 2021

I applied via Recruitment Consultant and was interviewed in Jan 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Data Engineering questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Be prepared properly
Interview experience
3
Average
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Not Selected

I was interviewed in Oct 2024.

Round 1 - Technical 

(1 Question)

  • Q1. Project related questions from your CV
Round 2 - Technical 

(2 Questions)

  • Q1. Question on transformers
  • Q2. Comparison of transfer learning and fintuning.
  • Ans. 

    Transfer learning involves using pre-trained models on a different task, while fine-tuning involves further training a pre-trained model on a specific task.

    • Transfer learning uses knowledge gained from one task to improve learning on a different task.

    • Fine-tuning involves adjusting the parameters of a pre-trained model to better fit a specific task.

    • Transfer learning is faster and requires less data compared to training a...

  • Answered by AI

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Approached by Company and was interviewed in Sep 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Gave one easy question and asked what will be the output
  • Q2. Leetcode 2 sum question

Interview Preparation Tips

Interview preparation tips for other job seekers - I was pretty much sure that I would pass L1 round and hoping for L2 round. I was interviewing for Generative AI Engineer. It was full 1 hr. The interviewer was less experienced than me. He asked me about my current work and focused more on previous work. I gave 80% correct answers and still did not make it. Don't know what they were expecting from me. Then I thought, maybe they are just taking the interview for the name sake. Sometimes, rejections are baseless.
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
-
Result
No response

I applied via Naukri.com and was interviewed in Jul 2024. There was 1 interview round.

Round 1 - Technical 

(6 Questions)

  • Q1. Which GenAI projects I have worked on
  • Q2. What is the context window in LLMs
  • Ans. 

    Context window in LLMs refers to the number of surrounding words considered when predicting the next word in a sequence.

    • Context window helps LLMs capture dependencies between words in a sentence.

    • A larger context window allows the model to consider more context but may lead to increased computational complexity.

    • For example, in a context window of 2, the model considers 2 words before and 2 words after the target word fo

  • Answered by AI
  • Q3. What is top_k parameter
  • Ans. 

    top_k parameter is used to specify the number of top elements to be returned in a result set.

    • top_k parameter is commonly used in machine learning algorithms to limit the number of predictions or recommendations.

    • For example, in recommendation systems, setting top_k=5 will return the top 5 recommended items for a user.

    • In natural language processing tasks, top_k can be used to limit the number of possible next words in a

  • Answered by AI
  • Q4. What are regex patterns in python
  • Ans. 

    Regex patterns in Python are sequences of characters that define a search pattern.

    • Regex patterns are used for pattern matching and searching in strings.

    • They are created using the 're' module in Python.

    • Examples of regex patterns include searching for email addresses, phone numbers, or specific words in a text.

  • Answered by AI
  • Q5. What are iterators and tuples
  • Ans. 

    Iterators are objects that allow iteration over a sequence of elements. Tuples are immutable sequences of elements.

    • Iterators are used to loop through elements in a collection, like lists or dictionaries

    • Tuples are similar to lists but are immutable, meaning their elements cannot be changed

    • Example of iterator: for item in list: print(item)

    • Example of tuple: my_tuple = (1, 2, 3)

  • Answered by AI
  • Q6. Do I have REST API experience
  • Ans. 

    Yes, I have experience working with REST APIs in various projects.

    • Developed RESTful APIs using Python Flask framework

    • Consumed REST APIs in data analysis projects using requests library

    • Used Postman for testing and debugging REST APIs

  • Answered by AI

Skills evaluated in this interview

HCLTech Interview FAQs

How many rounds are there in HCLTech Data Science Engineer interview?
HCLTech interview process usually has 5 rounds. The most common rounds in the HCLTech interview process are Coding Test, Resume Shortlist and Group Discussion.
How to prepare for HCLTech Data Science Engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at HCLTech. The most common topics and skills that interviewers at HCLTech expect are Python, Data Science, C++, Deep Learning and ETL.

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Join HCLTech Find your spark and discover what drives you forward
HCLTech Data Science Engineer Salary
based on 4 salaries
₹4.5 L/yr - ₹11.9 L/yr
21% less than the average Data Science Engineer Salary in India
View more details

HCLTech Data Science Engineer Reviews and Ratings

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