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Concentrix Catalyst Data Engineer 1 Interview Questions and Answers

Updated 13 Aug 2024

Concentrix Catalyst Data Engineer 1 Interview Experiences

1 interview found

Data Engineer 1 Interview Questions & Answers

user image Ponmozhi A

posted on 13 Aug 2024

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

(2 Questions)

  • Q1. Spark performance tuning methods
  • Ans. 

    Spark performance tuning methods involve optimizing resource allocation, data partitioning, and caching.

    • Optimize resource allocation by adjusting memory and CPU settings in Spark configurations.

    • Partition data effectively to distribute work evenly across nodes.

    • Utilize caching to store intermediate results in memory for faster access.

    • Use broadcast variables for small lookup tables to reduce shuffle operations.

    • Monitor and...

  • Answered by AI
  • Q2. Hadoop Architecture
Round 2 - Technical 

(2 Questions)

  • Q1. Python Program scenario
  • Q2. Pyspark scenario to remove regex characters from column values
  • Ans. 

    Use Pyspark to remove regex characters from column values

    • Use the regexp_replace function in Pyspark to remove regex characters from column values

    • Specify the regex pattern to match and the replacement string

    • Apply the regexp_replace function to the desired column in the DataFrame

  • Answered by AI
Round 3 - HR 

(2 Questions)

  • Q1. Previous company experiences
  • Ans. 

    I have experience working as a Data Engineer at XYZ Company for 2 years.

    • Developed ETL pipelines to extract, transform, and load data from various sources

    • Optimized database performance and implemented data quality checks

    • Collaborated with cross-functional teams to design and implement data solutions

  • Answered by AI
  • Q2. Discussed about salary and perks

Interview Preparation Tips

Interview preparation tips for other job seekers - It was good and swift process.

Skills evaluated in this interview

Interview questions from similar companies

I was interviewed before Sep 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 140 minutes
Round difficulty - Medium

Test timing was at 2:00 pm , it was conducted in a college and the environment was good for the test. Camera was a primary part of test, so no suspicious activity.

  • Q1. 

    Sum of Two Numbers Represented as Arrays

    Given two numbers in the form of two arrays where each element of the array represents a digit, calculate the sum of these two numbers and return this sum as an ar...

  • Ans. 

    Given two numbers represented as arrays, calculate their sum and return the result as an array.

    • Iterate through the arrays from right to left, adding digits and carrying over if necessary

    • Handle cases where one array is longer than the other by considering the remaining digits

    • Ensure the final sum array does not have any leading zeros

  • Answered by AI
Round 2 - Face to Face 

Round duration - 20 minutes
Round difficulty - Easy

The round was conducted at around 12 p.m. I was called at the college location and then it was conducted. The interviewer was quite polite and frank.

Round 3 - HR 

Round duration - 8 minutes
Round difficulty - Easy

This round was conducted right after finishing and clearing the technical round at the same place and on the same day.

Interview Preparation Tips

Eligibility criteriaAbove 60 %Wipro Limited interview preparation:Topics to prepare for the interview - OOPS, Data Structures, Database Concepts, Coding problemsTime required to prepare for the interview - 2-3 monthsInterview preparation tips for other job seekers

Tip 1 : Practice atleast 2-3 Coding problems daily so your logic building becomes stronger.
Tip 2 : Exercise problems based on OOPS concepts and others too.
Tip 3 : If you can have your own project built, then it's the major point and will act as a plus point.

Application resume tips for other job seekers

Tip 1 : Your resume should be in standard form, short and simple will be more effective.
Tip 2 : Whatever you have learned, you need to mention it in your resume as that will be your primary source of selection and having project on your resume is important.

Final outcome of the interviewSelected

Skills evaluated in this interview

I applied via Campus Placement and was interviewed before Feb 2020. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Hr

Interview Preparation Tips

Interview preparation tips for other job seekers - You should be true to what you are putting before the interviewer . Try to put your ideas Add something you did well in your career like in projects /research which you know very well and versed in concepts about it for open interview so that interviewer can get bandwidth where he can ask questions from. This is simply a key .

I applied via Campus Placement and was interviewed in Dec 2020. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. 1.Describe a situation where you have taken a quick decision and failed, and a situation where you succeeded. 2. What is a skill you have tried to achieve but failed? 3. Describe a decision you have taken ...

Interview Preparation Tips

Interview preparation tips for other job seekers - 1. Always try to take risk in small problems . When you face the consequences, you would be able to tackle bigger problems.
2. Every skill you learn, even if you didn't excel in it is not to be considered a waste of time/failure, you learn something simply by participating.

I applied via Campus Placement and was interviewed before Jun 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Tell me about Yourself, some questions related to machine learning, and I was asked more questions to differentiate like differences between ml and ai, python and c, c and java and procedural and functiona...

Interview Preparation Tips

Interview preparation tips for other job seekers - Get a complete grip on your resume and be confident about what you say, If you don't know the answer it is okay to agree that you don't know the answer so that interviewer can ask the next questions.

I was interviewed before Jun 2021.

Round 1 - Coding Test 

(2 Questions)

Round duration - 180 minutes
Round difficulty - Easy

It was an mcq + coding round. There were aptitude and ouput based question in mcq. And coding questions were easy

  • Q1. 

    Find the Duplicate Number Problem Statement

    Given an integer array 'ARR' of size 'N' containing numbers from 0 to (N - 2). Each number appears at least once, and there is one number that appears twice. Yo...

  • Ans. 

    Find the duplicate number in an array of integers from 0 to (N-2).

    • Iterate through the array and keep track of the frequency of each number using a hashmap.

    • Return the number with a frequency greater than 1 as the duplicate number.

    • Time complexity can be optimized to O(N) using Floyd's Tortoise and Hare algorithm.

  • Answered by AI
  • Q2. 

    Reverse String Operations Problem Statement

    You are provided with a string S and an array of integers A of size M. Your task is to perform M operations on the string as specified by the indices in array A...

  • Ans. 

    Given a string and an array of indices, reverse substrings based on the indices to obtain the final string.

    • Iterate through the array of indices and reverse the substrings accordingly

    • Ensure the range specified by each index is non-empty

    • Return the final string after all operations are completed

  • Answered by AI
Round 2 - Video Call 

Round duration - 60 Minutes
Round difficulty - Easy

It was technical + hr round. there were 2 people as interviewer. They stated from intro and asked some basic puzzles and hr questions. After that they asked about my projects, technologies and some ds algo and dbms questions.

Interview Preparation Tips

Eligibility criterianaAccenture interview preparation:Topics to prepare for the interview - Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic ProgrammingTime required to prepare for the interview - 6 MonthsInterview preparation tips for other job seekers

Tip 1 : Practice aptitude
Tip 2 : Focus on practicing coding
Tip 3 : Learn from mistakes

Application resume tips for other job seekers

Tip 1 : Mention some projects that you have done
Tip 2 : Try to have skills that are required for the role

Final outcome of the interviewSelected

Skills evaluated in this interview

I applied via Job Portal and was interviewed before Jan 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Oops Concepts,JAVA 8

Interview Preparation Tips

Interview preparation tips for other job seekers - Quite simple and easy. 1st round technical.2nd round HR

I applied via Campus Placement and was interviewed before Aug 2021. There were 2 interview rounds.

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 Resume tips
Round 2 - Coding Test 

Easy DSA questions and some questions on resume

Interview Preparation Tips

Interview preparation tips for other job seekers - Don't join if you are a fresher and want to grow as a developer. I had resigned that time I am writing this review

I applied via Campus Placement and was interviewed in Mar 2020. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. How do you get the second to last element from a SQL table?
  • Ans. 

    To get the second to last element from a SQL table, use the OFFSET-FETCH clause.

    • Use the ORDER BY clause to sort the table in descending order.

    • Use the OFFSET-FETCH clause to skip the last row and fetch the second to last row.

    • Example: SELECT column_name FROM table_name ORDER BY column_name DESC OFFSET 1 ROWS FETCH NEXT 1 ROWS ONLY;

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Practice by building a simple full stack web application.

Skills evaluated in this interview

Interview Questionnaire 

6 Questions

  • Q1. What is fan trap? How to solve it? Give one example.
  • Ans. 

    Fan trap is a situation in which a query involving multiple tables results in a Cartesian product.

    • Fan trap occurs when a table is connected to multiple tables in a one-to-many relationship.

    • It can be solved by creating a bridge table or by using aggregate functions.

    • For example, if a customer table is connected to an orders table and a products table, a fan trap can occur when trying to retrieve information about custome...

  • Answered by AI
  • Q2. Two tables are joined. But joined type are not mentioned, then how much records will retrieve using select statement.
  • Q3. How to use dynamic break in report?
  • Ans. 

    Dynamic break in report allows for automatic page breaks based on data.

    • Define a break field in the report design

    • Set the break field to trigger a page break when its value changes

    • Use dynamic break to automatically adjust page breaks based on data

    • Example: A report on sales by region can use dynamic break to create a new page for each region

  • Answered by AI
  • Q4. Use of foreach function in report.
  • Ans. 

    Foreach function is used to iterate through an array of strings in a report.

    • Foreach function is used to loop through each element in an array of strings.

    • It can be used to display each element in a report.

    • Example: foreach(string item in stringArray){ Console.WriteLine(item); }

  • Answered by AI
  • Q5. What is Aggregate awareness? When we use it? Syntax of it.
  • Ans. 

    Aggregate awareness is a feature in Business Objects that allows reports to be optimized for performance by using aggregate tables.

    • Aggregate awareness is used when creating reports in Business Objects

    • It allows the report to use aggregate tables instead of detailed tables for improved performance

    • Syntax: AGGR_AWARE(, ,

      )

    • Example: AGGR_AWARE(Product, Sum(Sales), Sales_Fact_Table)

  • Answered by AI
  • Q6. @prompt function syntax and it's use.
  • Ans. 

    The @prompt function syntax is used to display a prompt message to the user and receive input.

    • The syntax is @prompt('message', 'default value')

    • The message is the prompt message to be displayed to the user

    • The default value is optional and will be displayed in the input field

    • The function returns the value entered by the user

  • Answered by AI
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Concentrix Catalyst Interview FAQs

How many rounds are there in Concentrix Catalyst Data Engineer 1 interview?
Concentrix Catalyst interview process usually has 3 rounds. The most common rounds in the Concentrix Catalyst interview process are Technical and HR.
What are the top questions asked in Concentrix Catalyst Data Engineer 1 interview?

Some of the top questions asked at the Concentrix Catalyst Data Engineer 1 interview -

  1. Pyspark scenario to remove regex characters from column val...read more
  2. Spark performance tuning meth...read more
  3. Python Program scena...read more

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