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Nineleaps Technology Solutions Interview Questions and Answers

Updated 9 May 2025
Popular Designations

25 Interview questions

A Data Analyst 1 was asked 3mo ago
Q. What is the difference between CTEs and Subqueries?
Ans. 

CTEs are named temporary result sets; subqueries are nested queries. Both help organize complex SQL queries.

  • CTEs (Common Table Expressions) are defined using the WITH clause, while subqueries are embedded within SELECT, INSERT, UPDATE, or DELETE statements.

  • CTEs can be referenced multiple times within a query, whereas subqueries can only be used once.

  • Example of CTE: WITH SalesCTE AS (SELECT * FROM Sales) SELECT * F...

View all Data Analyst 1 interview questions
A Data Analyst was asked 6mo ago
Q. Name a few commonly used Python libraries for Data Analysis.
Ans. 

Some commonly used Python libraries for Data Analysts are Pandas, NumPy, Matplotlib, and Scikit-learn.

  • Pandas - used for data manipulation and analysis

  • NumPy - used for numerical computing and working with arrays

  • Matplotlib - used for data visualization

  • Scikit-learn - used for machine learning and data mining

View all Data Analyst interview questions
A Data Analyst was asked 6mo ago
Q. How do you manage large datasets in Python?
Ans. 

Use libraries like pandas and dask to efficiently manage large datasets in Python.

  • Use pandas library for data manipulation and analysis.

  • Use dask library for parallel computing and out-of-core processing.

  • Optimize memory usage by loading data in chunks or using data types efficiently.

  • Consider using cloud services like AWS S3 or Google BigQuery for storing and processing large datasets.

View all Data Analyst interview questions
A Data Analyst was asked 6mo ago
Q. Given a table with fields (id, name, salary, managerId), find the managers who have at least 5 reportees under them.
Ans. 

Use SQL query to count number of reportees for each manager and filter out those with atleast 5 reportees.

  • Write a SQL query to count number of reportees for each manager using GROUP BY clause

  • Add HAVING clause to filter out managers with atleast 5 reportees

  • Example: SELECT managerId, COUNT(id) AS num_reportees FROM table_name GROUP BY managerId HAVING num_reportees >= 5

View all Data Analyst interview questions
A Senior Data Analyst was asked 8mo ago
Q. Write a SQL query using window functions, joins, and CTEs to solve a problem similar to those found on LeetCode.
Ans. 

Understanding SQL with Windows functions, joins, and CTEs is crucial for data analysis tasks.

  • Windows functions allow you to perform calculations across a set of table rows related to the current row, e.g., ROW_NUMBER().

  • Joins combine rows from two or more tables based on a related column, e.g., INNER JOIN, LEFT JOIN.

  • Common Table Expressions (CTEs) simplify complex queries by breaking them into manageable parts, e.g...

View all Senior Data Analyst interview questions
A Senior Data Analyst was asked 8mo ago
Q. Explain the COALESCE function in SQL and its syntax.
Ans. 

COALESCE in SQL returns the first non-null value from a list of arguments.

  • Syntax: COALESCE(value1, value2, ..., valueN)

  • Example: COALESCE(NULL, 'Hello', 'World') returns 'Hello'.

  • Useful for handling NULL values in queries.

  • Can be used in SELECT statements, WHERE clauses, and more.

View all Senior Data Analyst interview questions
A Data Engineer was asked 9mo ago
Q. What are your strengths?
Ans. 

My strengths include strong analytical skills, attention to detail, and the ability to work well in a team.

  • Strong analytical skills - able to analyze complex data sets and derive meaningful insights

  • Attention to detail - meticulous in ensuring data accuracy and quality

  • Team player - collaborate effectively with colleagues to achieve common goals

View all Data Engineer interview questions
Are these interview questions helpful?
A Data Engineer was asked 9mo ago
Q. What is your CGPA?
Ans. 

My CGPA is 3.8 out of 4.0.

  • My CGPA is 3.8, which is considered high in my university.

  • I have consistently maintained a high CGPA throughout my academic career.

  • I have received several academic awards based on my CGPA.

  • My CGPA reflects my dedication and hard work towards my studies.

View all Data Engineer interview questions
A Software Development Engineer 3 was asked 10mo ago
Q. How do you manage states?
Ans. 

I manage states by using state management libraries like Redux and MobX, and by following best practices like separating UI and business logic.

  • Use state management libraries like Redux or MobX to centralize and manage application state

  • Follow best practices like separating UI and business logic to keep states manageable and maintainable

  • Utilize local component state for simple and isolated state management within co...

View all Software Development Engineer 3 interview questions
A Software Development Engineer 3 was asked 10mo ago
Q. What are states in Flutter?
Ans. 

States in Flutter are the data values that can change during the lifetime of a widget.

  • States are used to manage the data that changes over time in a Flutter application.

  • There are two types of states in Flutter: Stateful and Stateless.

  • Stateful widgets have mutable state that can change over time, while stateless widgets are immutable.

  • Examples of states in Flutter include user input, network requests, and animations...

View all Software Development Engineer 3 interview questions

Nineleaps Technology Solutions Interview Experiences

34 interviews found

Data Analyst Interview Questions & Answers

user image Anonymous

posted on 17 Dec 2024

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

I applied via Instahyre and was interviewed in Nov 2024. There was 1 interview round.

Round 1 - Technical 

(4 Questions)

  • Q1. Coalesce, SQL Order of Execution
  • Q2. Given a table with fields(id, name, salary, managerId) find out the managers who have atleast 5 reportees under him/her.
  • Ans. 

    Use SQL query to count number of reportees for each manager and filter out those with atleast 5 reportees.

    • Write a SQL query to count number of reportees for each manager using GROUP BY clause

    • Add HAVING clause to filter out managers with atleast 5 reportees

    • Example: SELECT managerId, COUNT(id) AS num_reportees FROM table_name GROUP BY managerId HAVING num_reportees >= 5

  • Answered by AI
  • Q3. How to manage large datasets in python
  • Ans. 

    Use libraries like pandas and dask to efficiently manage large datasets in Python.

    • Use pandas library for data manipulation and analysis.

    • Use dask library for parallel computing and out-of-core processing.

    • Optimize memory usage by loading data in chunks or using data types efficiently.

    • Consider using cloud services like AWS S3 or Google BigQuery for storing and processing large datasets.

  • Answered by AI
  • Q4. Name few of the commonly used python libraries used by DA
  • Ans. 

    Some commonly used Python libraries for Data Analysts are Pandas, NumPy, Matplotlib, and Scikit-learn.

    • Pandas - used for data manipulation and analysis

    • NumPy - used for numerical computing and working with arrays

    • Matplotlib - used for data visualization

    • Scikit-learn - used for machine learning and data mining

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Nineleaps Technology Solutions Data Analyst interview:
  • SQL
  • Python
Interview preparation tips for other job seekers - Focus on basics of SQL, Python and practice tricky SQL interview questions.

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 23 Sep 2024

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

It wa really a great experience.

Round 2 - Coding Test 

It was really a great experience.

Round 3 - HR 

(2 Questions)

  • Q1. Where do you see yourself after 3 years?
  • Ans. 

    In 3 years, I see myself leading a team of data engineers, implementing cutting-edge technologies, and driving impactful data-driven decisions.

    • Leading a team of data engineers

    • Implementing cutting-edge technologies

    • Driving impactful data-driven decisions

  • Answered by AI
  • Q2. What are your strenghts?
  • Ans. 

    My strengths include strong analytical skills, attention to detail, and the ability to work well in a team.

    • Strong analytical skills - able to analyze complex data sets and derive meaningful insights

    • Attention to detail - meticulous in ensuring data accuracy and quality

    • Team player - collaborate effectively with colleagues to achieve common goals

  • Answered by AI
Round 4 - One-on-one 

(3 Questions)

  • Q1. What projects you have worked upon?
  • Ans. 

    I have worked on projects involving building data pipelines, optimizing database performance, and creating machine learning models.

    • Built data pipelines using Apache Spark and Kafka

    • Optimized database performance by tuning queries and indexes

    • Created machine learning models for predictive analytics

    • Implemented real-time data processing using technologies like Apache Flink

  • Answered by AI
  • Q2. What is your CGPA?
  • Ans. 

    My CGPA is 3.8 out of 4.0.

    • My CGPA is 3.8, which is considered high in my university.

    • I have consistently maintained a high CGPA throughout my academic career.

    • I have received several academic awards based on my CGPA.

    • My CGPA reflects my dedication and hard work towards my studies.

  • Answered by AI
  • Q3. What are your hobbies?
  • Ans. 

    My hobbies include hiking, photography, and playing the guitar.

    • Hiking: I enjoy exploring nature trails and challenging myself physically.

    • Photography: I love capturing moments and landscapes through my camera lens.

    • Playing the guitar: I find relaxation and creativity in strumming chords and learning new songs.

  • Answered by AI
Interview experience
4
Good
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Referral and was interviewed in Sep 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Asked about coalese in sql and its syntax.
  • Ans. 

    COALESCE in SQL returns the first non-null value from a list of arguments.

    • Syntax: COALESCE(value1, value2, ..., valueN)

    • Example: COALESCE(NULL, 'Hello', 'World') returns 'Hello'.

    • Useful for handling NULL values in queries.

    • Can be used in SELECT statements, WHERE clauses, and more.

  • Answered by AI
  • Q2. Sql from leetcode on windows function and joins and cte
  • Ans. 

    Understanding SQL with Windows functions, joins, and CTEs is crucial for data analysis tasks.

    • Windows functions allow you to perform calculations across a set of table rows related to the current row, e.g., ROW_NUMBER().

    • Joins combine rows from two or more tables based on a related column, e.g., INNER JOIN, LEFT JOIN.

    • Common Table Expressions (CTEs) simplify complex queries by breaking them into manageable parts, e.g., WI...

  • Answered by AI

Data Analyst Interview Questions & Answers

user image Anonymous

posted on 10 Aug 2024

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

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

Round 1 - Technical 

(3 Questions)

  • Q1. Difference Between Union and Union All
  • Q2. SQL Execution order
  • Q3. Coalesce function in SQL
  • Ans. 

    Coalesce function in SQL is used to return the first non-null value in a list of expressions.

    • Coalesce function takes multiple parameters and returns the first non-null value.

    • It is commonly used to handle null values in SQL queries.

    • Example: SELECT COALESCE(column_name, 'N/A') FROM table_name;

  • Answered by AI

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. What are states in flutter
  • Ans. 

    States in Flutter are the data values that can change during the lifetime of a widget.

    • States are used to manage the data that changes over time in a Flutter application.

    • There are two types of states in Flutter: Stateful and Stateless.

    • Stateful widgets have mutable state that can change over time, while stateless widgets are immutable.

    • Examples of states in Flutter include user input, network requests, and animations.

  • Answered by AI
  • Q2. How do you manage states
  • Ans. 

    I manage states by using state management libraries like Redux and MobX, and by following best practices like separating UI and business logic.

    • Use state management libraries like Redux or MobX to centralize and manage application state

    • Follow best practices like separating UI and business logic to keep states manageable and maintainable

    • Utilize local component state for simple and isolated state management within compone...

  • Answered by AI

Skills evaluated in this interview

Interview Questions & Answers

user image Bhaskar Bareth

posted on 22 Feb 2025

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

I appeared for an interview in Jan 2025.

Round 1 - Technical 

(2 Questions)

  • Q1. Oops Collection SQL Java8 features Exception handling
  • Q2. Small code

Interview Preparation Tips

Interview preparation tips for other job seekers - Revise all topics specific to JD. Be confident

Data Analyst Interview Questions & Answers

user image Anonymous

posted on 29 Jul 2024

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

(2 Questions)

  • Q1. Basic 10-15btheorotical question
  • Q2. Join + window funct question

Interview Preparation Tips

Interview preparation tips for other job seekers - prep your advance sql very well

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 15 Jan 2024

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

General Aptitude Questions

Round 2 - Technical 

(3 Questions)

  • Q1. Queries on SQL, Basic Statistic Question related to normal curve, Basic Python question(from python interview question list of any website)
  • Q2. Shape of normal Distribution
  • Ans. 

    The shape of a normal distribution is bell-shaped and symmetrical.

    • A normal distribution has a peak at the mean and tails that extend to infinity in both directions.

    • The distribution is symmetrical, meaning that the left and right halves mirror each other.

    • The standard deviation determines the spread or width of the distribution.

    • Many natural phenomena and measurements in various fields follow a normal distribution.

    • Example...

  • Answered by AI
  • Q3. Valuess of mean median and mode
  • Ans. 

    Mean, median, and mode are measures of central tendency in statistics.

    • Mean is the average of a set of numbers, calculated by summing all the values and dividing by the total count.

    • Median is the middle value in a sorted list of numbers. If there is an even number of values, it is the average of the two middle values.

    • Mode is the value that appears most frequently in a set of numbers. It can be a single value or multiple ...

  • Answered by AI
Round 3 - HR 

(1 Question)

  • Q1. General HR questions
Round 4 - One-on-one 

(1 Question)

  • Q1. General discussion round with ceo and about projects

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare SQL upto Advanced level
Then basics of python and Statistics
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

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

Round 1 - Aptitude Test 

Simple question on maths

Round 2 - Technical 

(2 Questions)

  • Q1. Explain OOPS concept
  • Ans. 

    OOPS (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and code.

    • OOPS focuses on creating objects that interact with each other to solve complex problems

    • Key principles include encapsulation, inheritance, polymorphism, and abstraction

    • Encapsulation ensures that the internal state of an object is hidden from the outside world

    • Inheritance allows a class to inherit...

  • Answered by AI
  • Q2. Coding array questions
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Career transition reason
  • Ans. 

    Seeking new challenges and opportunities for growth

    • Desire to expand skill set and knowledge

    • Looking for a more challenging role

    • Seeking opportunities for career advancement

  • Answered by AI
  • Q2. STAR method of evaluation for situations
  • Ans. 

    The STAR method is a structured way to respond to behavioral interview questions by discussing the Situation, Task, Action, and Result.

    • Situation - Describe the context or background of the situation you were in.

    • Task - Explain the specific task or goal you needed to accomplish.

    • Action - Outline the actions you took to address the situation or task.

    • Result - Share the outcome of your actions and any lessons learned.

    • Example...

  • Answered by AI

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Interview Tips & Stories
2w
toobluntforu
·
works at
Cvent
Can speak English, can’t deliver in interviews
I feel like I can't speak fluently during interviews. I do know english well and use it daily to communicate, but the moment I'm in an interview, I just get stuck. since it's not my first language, I struggle to express what I actually feel. I know the answer in my head, but I just can’t deliver it properly at that moment. Please guide me
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Nineleaps Technology Solutions Interview FAQs

How many rounds are there in Nineleaps Technology Solutions interview?
Nineleaps Technology Solutions interview process usually has 2-3 rounds. The most common rounds in the Nineleaps Technology Solutions interview process are Technical, HR and One-on-one Round.
How to prepare for Nineleaps Technology Solutions 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 Nineleaps Technology Solutions. The most common topics and skills that interviewers at Nineleaps Technology Solutions expect are Healthcare, Python, Agile, Coding and Javascript.
What are the top questions asked in Nineleaps Technology Solutions interview?

Some of the top questions asked at the Nineleaps Technology Solutions interview -

  1. Given a table with fields(id, name, salary, managerId) find out the managers wh...read more
  2. how to run n number of test cases without complie it in j...read more
  3. Name few of the commonly used python libraries used by...read more
How long is the Nineleaps Technology Solutions interview process?

The duration of Nineleaps Technology Solutions interview process can vary, but typically it takes about less than 2 weeks to complete.

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Overall Interview Experience Rating

3.9/5

based on 36 interview experiences

Difficulty level

Easy 11%
Moderate 78%
Hard 11%

Duration

Less than 2 weeks 78%
2-4 weeks 22%
View more
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