Upload Button Icon Add office photos
Engaged Employer

i

This company page is being actively managed by Altimetrik Team. If you also belong to the team, you can get access from here

Altimetrik Verified Tick

Compare button icon Compare button icon Compare

Filter interviews by

Altimetrik Data Engineer Interview Questions and Answers

Updated 18 May 2025

13 Interview questions

A Data Engineer was asked 7mo ago
Q. How would you implement an incremental load in a table?
Ans. 

Implementing incremental load in a table involves updating only new or changed data without reloading the entire dataset.

  • Identify a column in the table that can be used to track changes, such as a timestamp or a version number

  • Use this column to filter out only the new or updated records during each load

  • Merge the new data with the existing data in the table using SQL queries or ETL tools

  • Ensure data integrity by han...

A Data Engineer was asked 9mo ago
Q. How can you optimize DAGs?
Ans. 

Optimizing dags involves reducing unnecessary tasks, parallelizing tasks, and optimizing resource allocation.

  • Identify and remove unnecessary tasks to streamline the workflow.

  • Parallelize tasks to reduce overall execution time.

  • Optimize resource allocation by scaling up or down based on task requirements.

  • Use caching and memoization techniques to avoid redundant computations.

  • Implement data partitioning and indexing fo...

Data Engineer Interview Questions Asked at Other Companies

asked in Sigmoid
Q1. Next Greater Element Problem Statement You are given an array arr ... read more
asked in LTIMindtree
Q2. If you are given cards numbered 1-1000 and 4 boxes, where card 1 ... read more
asked in Cisco
Q3. Optimal Strategy for a Coin Game You are playing a coin game with ... read more
asked in Sigmoid
Q4. Problem: Search In Rotated Sorted Array Given a sorted array that ... read more
asked in Sigmoid
Q5. K-th Element of Two Sorted Arrays You are provided with two sorte ... read more
A Data Engineer was asked 9mo ago
Q. How can we handle unacknowledged messages in Pub/Sub?
Ans. 

Unacknowledged messages in pubsub can be handled by implementing retries, dead letter queues, and monitoring mechanisms.

  • Implement retries for unacknowledged messages to be redelivered.

  • Use dead letter queues to store messages that repeatedly fail to be processed.

  • Set up monitoring mechanisms to track unacknowledged messages and identify potential issues.

A Data Engineer was asked 9mo ago
Q. How do you remove duplicate rows from a table?
Ans. 

Use the DISTINCT keyword in a SELECT statement to remove duplicate rows from a table.

  • Use the DISTINCT keyword in a SELECT statement to retrieve unique rows

  • Use the GROUP BY clause with appropriate columns to remove duplicates

  • Use the ROW_NUMBER() function to assign a unique row number to each row and then filter out rows with row number greater than 1

A Data Engineer was asked 9mo ago
Q. What is Hadoop in big data?
Ans. 

Hadoop is an open-source framework used for distributed storage and processing of large data sets across clusters of computers.

  • Hadoop consists of HDFS (Hadoop Distributed File System) for storage and MapReduce for processing.

  • It allows for parallel processing of large datasets across multiple nodes in a cluster.

  • Hadoop is scalable, fault-tolerant, and cost-effective for handling big data.

  • Popular tools like Apache Hi...

A Data Engineer was asked 11mo ago
Q. How would you delete a column from a table?
Ans. 

To delete a column from a table, use the ALTER TABLE command.

  • Use the ALTER TABLE command followed by DROP COLUMN to delete a column from a table.

  • Specify the name of the column you want to delete after the DROP COLUMN keyword.

  • Make sure to carefully consider the impact of deleting a column on the data and any dependent objects.

A Data Engineer was asked 11mo ago
Q. What is the difference between TOP and LIMIT?
Ans. 

Top is used to select the first few rows from a dataset, while limit is used to restrict the number of rows returned in a query.

  • Top is commonly used in SQL Server, while limit is commonly used in MySQL.

  • Top is used with the SELECT statement in SQL Server to limit the number of rows returned, while limit is used in MySQL to restrict the number of rows returned.

  • Example: SELECT TOP 5 * FROM table_name; (SQL Server) vs...

Are these interview questions helpful?
A Data Engineer was asked 11mo ago
Q. What are the differences between DROP, TRUNCATE, and DELETE statements?
Ans. 

Drop removes a table from the database, truncate removes all rows from a table, and delete removes specific rows from a table.

  • DROP: Removes the entire table structure and data from the database.

  • TRUNCATE: Removes all rows from a table but keeps the table structure.

  • DELETE: Removes specific rows from a table based on a condition.

  • Example: DROP TABLE table_name;

  • Example: TRUNCATE TABLE table_name;

  • Example: DELETE FROM ta...

A Data Engineer was asked 11mo ago
Q. What is the difference between COUNT(*) and COUNT(1)?
Ans. 

count(*) counts all rows in a table, while count(1) counts the number of non-null values in a specific column.

  • count(*) counts all rows in a table

  • count(1) counts the number of non-null values in a specific column

  • count(*) is generally used when you want to count all rows in a table, while count(1) is used when you want to count non-null values in a specific column

A Data Engineer was asked 11mo ago
Q. How would you find columns from a table where the data type is timestamp?
Ans. 

Use SQL query to find columns with timestamp data type in a table.

  • Use a SQL query like 'SHOW COLUMNS FROM table_name WHERE Type = 'timestamp''

  • Alternatively, query the information_schema.columns table for column data types

  • Check for variations of timestamp data types like datetime, timestamp, etc.

Altimetrik Data Engineer Interview Experiences

18 interviews found

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 23 Dec 2024

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

(2 Questions)

  • Q1. SCD questions. Iceberg questions
  • Q2. Basic python programing, pyspark architechture.

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 30 Nov 2024

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

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

Round 1 - One-on-one 

(2 Questions)

  • Q1. Find the 2nd highest salary group by department
  • Ans. 

    SQL query to retrieve the second highest salary in each department.

    • Use the 'DENSE_RANK()' window function to rank salaries within each department.

    • Filter the results to get only the second highest salary using a WHERE clause.

    • Example SQL: SELECT department, salary FROM (SELECT department, salary, DENSE_RANK() OVER (PARTITION BY department ORDER BY salary DESC) AS rank FROM employees) AS ranked WHERE rank = 2;

  • Answered by AI
  • Q2. How to implement incremental load in a table
  • Ans. 

    Implementing incremental load in a table involves updating only new or changed data without reloading the entire dataset.

    • Identify a column in the table that can be used to track changes, such as a timestamp or a version number

    • Use this column to filter out only the new or updated records during each load

    • Merge the new data with the existing data in the table using SQL queries or ETL tools

    • Ensure data integrity by handling...

  • Answered by AI

Skills evaluated in this interview

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 22 Jul 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(7 Questions)

  • Q1. Find columns from a table where data type is timestamp.
  • Ans. 

    Use SQL query to find columns with timestamp data type in a table.

    • Use a SQL query like 'SHOW COLUMNS FROM table_name WHERE Type = 'timestamp''

    • Alternatively, query the information_schema.columns table for column data types

    • Check for variations of timestamp data types like datetime, timestamp, etc.

  • Answered by AI
  • Q2. Alter column name
  • Q3. Delete column from a table
  • Ans. 

    To delete a column from a table, use the ALTER TABLE command.

    • Use the ALTER TABLE command followed by DROP COLUMN to delete a column from a table.

    • Specify the name of the column you want to delete after the DROP COLUMN keyword.

    • Make sure to carefully consider the impact of deleting a column on the data and any dependent objects.

  • Answered by AI
  • Q4. Difference between drop, truncate and delete
  • Ans. 

    Drop removes a table from the database, truncate removes all rows from a table, and delete removes specific rows from a table.

    • DROP: Removes the entire table structure and data from the database.

    • TRUNCATE: Removes all rows from a table but keeps the table structure.

    • DELETE: Removes specific rows from a table based on a condition.

    • Example: DROP TABLE table_name;

    • Example: TRUNCATE TABLE table_name;

    • Example: DELETE FROM table_n...

  • Answered by AI
  • Q5. Difference between top and limit.
  • Ans. 

    Top is used to select the first few rows from a dataset, while limit is used to restrict the number of rows returned in a query.

    • Top is commonly used in SQL Server, while limit is commonly used in MySQL.

    • Top is used with the SELECT statement in SQL Server to limit the number of rows returned, while limit is used in MySQL to restrict the number of rows returned.

    • Example: SELECT TOP 5 * FROM table_name; (SQL Server) vs. SEL...

  • Answered by AI
  • Q6. What is difference between count(*) and count(1)
  • Ans. 

    count(*) counts all rows in a table, while count(1) counts the number of non-null values in a specific column.

    • count(*) counts all rows in a table

    • count(1) counts the number of non-null values in a specific column

    • count(*) is generally used when you want to count all rows in a table, while count(1) is used when you want to count non-null values in a specific column

  • Answered by AI
  • Q7. FInd second index of "l" from a string "Hello". write a py code.
  • Ans. 

    Find the second index of 'l' in the string 'Hello'.

    • Use the find() method to find the first index of 'l'.

    • Use the find() method again starting from the index after the first 'l' to find the second index.

    • Handle cases where the first 'l' is not found or there is no second 'l'.

  • Answered by AI

Skills evaluated in this interview

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 29 Sep 2024

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

(2 Questions)

  • Q1. How can you optmize dags?
  • Ans. 

    Optimizing dags involves reducing unnecessary tasks, parallelizing tasks, and optimizing resource allocation.

    • Identify and remove unnecessary tasks to streamline the workflow.

    • Parallelize tasks to reduce overall execution time.

    • Optimize resource allocation by scaling up or down based on task requirements.

    • Use caching and memoization techniques to avoid redundant computations.

    • Implement data partitioning and indexing for eff...

  • Answered by AI
  • Q2. How can we handle unacknowledged messages in pubsub?
  • Ans. 

    Unacknowledged messages in pubsub can be handled by implementing retries, dead letter queues, and monitoring mechanisms.

    • Implement retries for unacknowledged messages to be redelivered.

    • Use dead letter queues to store messages that repeatedly fail to be processed.

    • Set up monitoring mechanisms to track unacknowledged messages and identify potential issues.

  • Answered by AI

Skills evaluated in this interview

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 16 Sep 2024

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I appeared for an interview in Aug 2024.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Big data technologies
  • Q2. What is hadoop in big data
  • Ans. 

    Hadoop is an open-source framework used for distributed storage and processing of large data sets across clusters of computers.

    • Hadoop consists of HDFS (Hadoop Distributed File System) for storage and MapReduce for processing.

    • It allows for parallel processing of large datasets across multiple nodes in a cluster.

    • Hadoop is scalable, fault-tolerant, and cost-effective for handling big data.

    • Popular tools like Apache Hive, A...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - prepare for day to day activites and trouble shooting and a security

Skills evaluated in this interview

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 27 Sep 2024

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

I appeared for an interview in Aug 2024.

Round 1 - Technical 

(2 Questions)

  • Q1. How to drop duplicated rows from table
  • Ans. 

    Use the DISTINCT keyword in a SELECT statement to remove duplicate rows from a table.

    • Use the DISTINCT keyword in a SELECT statement to retrieve unique rows

    • Use the GROUP BY clause with appropriate columns to remove duplicates

    • Use the ROW_NUMBER() function to assign a unique row number to each row and then filter out rows with row number greater than 1

  • Answered by AI
  • Q2. Big query questions

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Naukri.com and was interviewed in Mar 2024. There were 2 interview rounds.

Round 1 - Coding Test 

Technical Assessment Test (MCQs) - 30 mins.

Round 2 - Technical 

(4 Questions)

  • Q1. Basic Questions on: 1.Python 2.SQL 3.Spark
  • Q2. Python: Replace all occurrences of word: "apple" with "froot" and count no.of occurrences of word: "apple" - in a given string (multiple lines) SQL: 1. Retrieve employee details, drawing the maximum salar...
  • Q3. Convert string (multiple lines) to list
  • Ans. 

    Use the split() method to convert a string with multiple lines into a list of strings.

    • Use the split() method with the newline character '\n' as the delimiter to split the string into a list of strings.

    • Example: 'Hello\nWorld\n' -> ['Hello', 'World']

  • Answered by AI
  • Q4. Convert string of multiple lines with 'n' words to multiple arrays of fixed size: k, with no overlap of elements accross arrays.
  • Ans. 

    Convert a string of multiple lines with 'n' words to multiple arrays of fixed size without overlap.

    • Split the string into individual words

    • Create arrays of fixed size 'k' and distribute words evenly

    • Handle cases where the number of words is not divisible by 'k'

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Altimetrik Data Engineer interview:
  • Python
  • SQL
  • PySpark

Skills evaluated in this interview

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 22 Apr 2025

Interview experience
1
Bad
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
No response

I appeared for an interview in Oct 2024, where I was asked the following questions.

  • Q1. SQL - window functions, joins
  • Q2. About the project

Interview Preparation Tips

Interview preparation tips for other job seekers - I went through two technical rounds at Altimetrik and received a congratulatory email for clearing them. They also completed my background verification after the first round, which made it seem like the process was moving ahead. But after that, HR completely stopped responding. Despite multiple follow-ups, I never received any update or closure on the hiring status. It's extremely unprofessional to treat candidates this way, especially after they've invested time and gone through several steps.

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 28 Dec 2024

Interview experience
2
Poor
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
No response

I applied via Company Website and was interviewed before Dec 2023. There were 2 interview rounds.

Round 1 - One-on-one 

(3 Questions)

  • Q1. Basics of SQL. Joins, ORDER BY , GROUP BY , INDEX
  • Q2. Hive and Big Data Architecutre
  • Q3. Data ingestions and management
Round 2 - One-on-one 

(2 Questions)

  • Q1. Hive and Big data questions
  • Q2. File formats

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 28 Mar 2024

Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(4 Questions)

  • Q1. Questions on joins
  • Q2. Unions related question
  • Q3. Intersection related question
  • Q4. Sunstrong related

Top trending discussions

View All
Interview Tips & Stories
6d (edited)
a team lead
Why are women still asked such personal questions in interview?
I recently went for an interview… and honestly, m still trying to process what just happened. Instead of being asked about my skills, experience, or how I could add value to the company… the questions took a totally unexpected turn. The interviewer started asking things like When are you getting married? Are you engaged? And m sure, if I had said I was married, the next question would’ve been How long have you been married? What does my personal life have to do with the job m applying for? This is where I felt the gender discrimination hit hard. These types of questions are so casually thrown at women during interviews but are they ever asked to men? No one asks male candidates if they’re planning a wedding or how old their kids are. So why is it okay to ask women? Can we please stop normalising this kind of behaviour in interviews? Our careers shouldn’t be judged by our relationship status. Period.
Got a question about Altimetrik?
Ask anonymously on communities.

Altimetrik Interview FAQs

How many rounds are there in Altimetrik Data Engineer interview?
Altimetrik interview process usually has 1-2 rounds. The most common rounds in the Altimetrik interview process are Technical, One-on-one Round and Resume Shortlist.
How to prepare for Altimetrik 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 Altimetrik. The most common topics and skills that interviewers at Altimetrik expect are Python, Spark, SQL, Big Data and Hadoop.
What are the top questions asked in Altimetrik Data Engineer interview?

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

  1. convert string of multiple lines with 'n' words to multiple arrays of fixed siz...read more
  2. Find columns from a table where data type is timesta...read more
  3. how can we handle unacknowledged messages in pubs...read more
How long is the Altimetrik Data Engineer interview process?

The duration of Altimetrik Data Engineer interview process can vary, but typically it takes about less than 2 weeks to complete.

Tell us how to improve this page.

Overall Interview Experience Rating

3.8/5

based on 17 interview experiences

Difficulty level

Moderate 100%

Duration

Less than 2 weeks 64%
2-4 weeks 36%
View more
Altimetrik Data Engineer Salary
based on 218 salaries
₹7.4 L/yr - ₹24.7 L/yr
38% more than the average Data Engineer Salary in India
View more details

Altimetrik Data Engineer Reviews and Ratings

based on 30 reviews

4.0/5

Rating in categories

3.7

Skill development

4.1

Work-life balance

4.3

Salary

3.5

Job security

4.1

Company culture

3.6

Promotions

3.7

Work satisfaction

Explore 30 Reviews and Ratings
Hiring For Data Engineer + ETL - Altimetrik - Bangalore

Bangalore / Bengaluru

5-10 Yrs

Not Disclosed

Explore more jobs
Senior Software Engineer
1.4k salaries
unlock blur

₹15 L/yr - ₹29.8 L/yr

Staff Engineer
1.1k salaries
unlock blur

₹20.4 L/yr - ₹36.8 L/yr

Senior Engineer
809 salaries
unlock blur

₹15.3 L/yr - ₹28 L/yr

Software Engineer
389 salaries
unlock blur

₹8.2 L/yr - ₹14 L/yr

Senior Data Engineer
244 salaries
unlock blur

₹15.8 L/yr - ₹28 L/yr

Explore more salaries
Compare Altimetrik with

Accenture

3.7
Compare

Xoriant

4.1
Compare

CitiusTech

3.3
Compare

HTC Global Services

3.5
Compare
write
Share an Interview