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MathCo Data Engineer Interview Questions and Answers

Updated 2 Jan 2025

MathCo Data Engineer Interview Experiences

2 interviews found

Data Engineer Interview Questions & Answers

user image Balajayani Radhakrishnan

posted on 17 Jul 2024

Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Simple question.. easy to crack

Round 2 - Case Study 

Yet to attend the 2nd round

Round 3 - One-on-one 

(2 Questions)

  • Q1. Yet to attend 2nd round
  • Q2. Yet to attend this round
Interview experience
4
Good
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Company Website and was interviewed before Jan 2024. There were 3 interview rounds.

Round 1 - HR 

(1 Question)

  • Q1. Describe your Past experiences
  • Ans. 

    I have experience working as a Data Engineer in various industries, including healthcare and finance.

    • Developed data pipelines to ingest, process, and analyze large datasets

    • Implemented ETL processes to transform data into usable formats

    • Worked with stakeholders to understand data requirements and deliver solutions

    • Utilized tools like Apache Spark, Hadoop, and SQL for data processing

    • Ensured data quality and integrity throu...

  • Answered by AI
Round 2 - Coding Test 

Basic Python and SQL

Round 3 - Technical 

(1 Question)

  • Q1. Scenario Based questions

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Interview experience
2
Poor
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

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

Round 1 - Technical 

(2 Questions)

  • Q1. How to decide upon Spark cluster sizing?
  • Ans. 

    Spark cluster sizing depends on workload, data size, memory requirements, and processing speed.

    • Consider the size of the data being processed

    • Take into account the memory requirements of the Spark jobs

    • Factor in the processing speed needed for the workload

    • Scale the cluster based on the number of nodes and cores required

    • Monitor performance and adjust cluster size as needed

  • Answered by AI
  • Q2. Question on Spark internals
Round 2 - Case Study 

Implement a pipeline based on given conditions and data requirement

Round 3 - HR 

(1 Question)

  • Q1. There were no questions as such. They want me join on very next day when the HR discussion was over and started itimidating me with aggressive approach even without discussing the salary part and the benef...

Interview Preparation Tips

Interview preparation tips for other job seekers - I could clear both the rounds and salary discussion was the only thing left I decided not to join the company because of the way HR handled the process.
Based on the HR behaviour, I can say there is no respect for an employee/ candidate.
The behaviour was like as if I am at the mercy of the employer and I don't have any other company in this world.

Skills evaluated in this interview

I was interviewed in Mar 2017.

Interview Questionnaire 

1 Question

  • Q1. Views on their recruiting process
  • Ans. 

    I believe the recruiting process is thorough and well-organized.

    • The company uses a combination of resume screening, interviews, and assessments to evaluate candidates.

    • They have a clear timeline for the hiring process and keep candidates informed of their progress.

    • Feedback is provided to candidates after interviews to help them improve for future opportunities.

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience:

Interview Preparation Tips

Round: Test
Experience: The questions were of medium to high difficulty. What set this test apart was the fact that each question had different weightage ranging from 0.5 to 3 marks per question. Time was a major factor. So my strategy was to attempt all the 1 and 1.5 marks questions which constitute the major chunk of the paper in around 40 minutes and spend the remaining 20 minutes for the 2 and 3 mark questions. I did not even bother reading the 0.5 mark questions. The 2 and 3 mark questions were difficult and those will differentiate you from others. 1600 students wrote the test and only 86 got shortlisted for the next round.
Duration: 60 minutes
Total Questions: 40

Round: Technical Interview
Experience: I was asked to write a C program to print the Fibonacci sequence and a basic SQL query. Apart from this I was asked a puzzle and other questions related to my resume. Out of the 86, only 26 students were called for the next round which again was a technical interview.

Round: Technical Interview
Experience: This was similar to the first technical interview. I had to write a C program to print the prime numbers between 1 and 100 and a puzzle was asked again. Apart from this a guesstimate to find the number of cars between 2 places was asked and a scenario based question too was asked. These were followed by resume related questions.

Round: HR Interview
Experience: All the 26 students who attended the second technical round were allowed to attend HR round as well. This was just for 4 - 5 minutes. I was asked about my family background and why I should be hired. My fondest memories from school days were asked too. Finally offer letter was given to 10 students out of the 1600 who wrote the test :P

General Tips: Just keep a calm head and attempt the questions. Ask for time to think if you are not able to answer the questions immediately. Be bold and confident. That is sufficient :)
Skills: Puzzle Solving Capability, Ability To Think, SQL, C Programming
College Name: VIT Vellore
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. All basic concepts of pthon sql and ml
Round 2 - Coding Test 

Apptitude, tecncal, cognitiive

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

I applied via Campus Placement and was interviewed in Nov 2023. There were 4 interview rounds.

Round 1 - Aptitude Test 

Blood Relations, Pipes and Cisterns, Time and work etc.

Round 2 - Coding Test 

Question based on hashmap

Round 3 - Group Discussion 

Is Artificial Intelligence boon or ban.

Round 4 - Technical 

(2 Questions)

  • Q1. Python and SQL questions
  • Q2. Python and Numpy, Pandas

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare from your resume.
Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Basic SQL questions
  • Q2. Statistical questions
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Spark and airflow related questions
  • Q2. AWS services and it's related questions
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Nov 2023. There were 3 interview rounds.

Round 1 - Aptitude Test 

Difficult aptitude, had to solve a lot of problems in 2 hrs

Round 2 - Group Discussion 

GD topic was "online vs offline education "

Round 3 - Technical 

(2 Questions)

  • Q1. SQL question on self join
  • Q2. Guesstimate on number of cars sold in delhi
  • Ans. 

    Approximately 1.5-2 million cars are sold in Delhi annually.

    • Consider population of Delhi (approx. 20 million)

    • Assume car ownership rate (approx. 10%)

    • Factor in replacement rate and new buyers

  • Answered by AI
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MathCo Interview FAQs

How many rounds are there in MathCo Data Engineer interview?
MathCo interview process usually has 3 rounds. The most common rounds in the MathCo interview process are Aptitude Test, Case Study and One-on-one Round.
How to prepare for MathCo Data 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 MathCo. The most common topics and skills that interviewers at MathCo expect are Python, SQL, Data Warehousing, Big Data and Data Analysis.
What are the top questions asked in MathCo Data Engineer interview?

Some of the top questions asked at the MathCo Data Engineer interview -

  1. Scenario Based questi...read more
  2. yet to attend 2nd ro...read more
  3. yet to attend this ro...read more

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MathCo Data Engineer Interview Process

based on 2 interviews

Interview experience

3
  
Average
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MathCo Data Engineer Salary
based on 80 salaries
₹4 L/yr - ₹16.4 L/yr
12% less than the average Data Engineer Salary in India
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based on 14 reviews

3.2/5

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3.3

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2.7

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Promotions

2.9

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