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ConcertAI Data Engineer Interview Questions and Answers
Updated
10 May 2024
1 interview found
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Anonymous
Interview experience
Good
Difficulty level
Moderate
Duration
-
Result
Selected
I applied via Referral and was interviewed before May 2023.
2 Interview Rounds
1
Coding Test Round
Evaluation was done based on basic SQL queries and basic python scripting knowledge. SQL was based on joins, subqueries, aggregation, analytical functions like row_number, rank, dense rank, lead, lag. Python was mainly on writing pseudocode using list, sets, dictionary, conditional and looping constructs.
2
One-on-one Round (1 Question)
- Q1. What are the different AWS Data Analytics services used in your project and explanation for why each service was used? What are the alternate services available...read more View Answers (1)
Skills evaluated in this interview
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Interview Tips & Stories
2w (edited)
a consultant
Alternate documents for Employee verification?
My new employer asked for my previous offer letters and salary slips. When I inquired, they said it was for background verification.
However, I feel that providing these documents might affect salary negotiations, and it feels a bit unethical too.
What alternative documents can I provide for employment verification?
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Interview questions from similar companies
Interview experience
Average
Difficulty level
Easy
Duration
Less than 2 weeks
Result
Not Selected
I applied via Company Website and was interviewed in Nov 2024.
2 Interview Rounds
1
Technical Round (2 Questions)
- Q1. Sql constrainsts, star schema, dml dcl commands Add Answer
- Q2. About cureent project and responsibilities Add Answer
2
Technical Round (2 Questions)
- Q1. Current projects and resposibilities Add Answer
- Q2. Where vs having, reason for job change Add Answer
Interview Preparation Tips
Interview preparation tips for other job seekers - 1. Technical - about you current project and responsibilities, basic SQL question-constraints, starschema, DML DCL command, one sql query write.
2. Technical with senior manager- about project ,where vs having , reason of job change
2. Technical with senior manager- about project ,where vs having , reason of job change
Interview experience
Average
Difficulty level
Moderate
Duration
Less than 2 weeks
Result
No response
I applied via Naukri.com and was interviewed in Oct 2024.
2 Interview Rounds
1
Technical Round (7 Questions)
- Q1. How do you optimize SQL queries? View Answers (1)
- Q2. How do you do performance optimization in Spark. Tell how you did it in you project. View Answers (1)
- Q3. What is SparkContext and SparkSession? View Answers (1)
- Q4. When a spark job is submitted, what happens at backend. Explain the flow. View Answers (2)
- Q5. Calculate second highest salary using SQL as well as pyspark. View Answers (1)
- Q6. 2 types of modes for Spark architecture ? View Answers (1)
- Q7. If you want very less latency - which is better standalone or client mode? View Answers (1)
2
Technical Round (2 Questions)
- Q1. Scenario based. Write SQL and pyspark code for a dataset. Add Answer
- Q2. If you have to find latest record based on latest timestamp in a table for a particular customer(table is having history) , how will you do it. Self join and ne...read more Add Answer
Interview Preparation Tips
Topics to prepare for LTIMindtree Data Engineer interview:
- SQL
- pyspark
- ETL
Skills evaluated in this interview
Sashikanta Parida
Interview experience
Excellent
Difficulty level
Moderate
Duration
Less than 2 weeks
Result
Not Selected
I applied via Recruitment Consulltant and was interviewed in Nov 2024.
2 Interview Rounds
1
Technical Round (3 Questions)
- Q1. What are different type of joins available in Databricks? View Answers (1)
- Q2. How do you make your data pipeline fault tolerant? View Answers (1)
- Q3. What is AutoLoader? View Answers (1)
2
Technical Round (2 Questions)
- Q1. How do you connect to different services in Azure? View Answers (1)
- Q2. What are linked Services? View Answers (1)
Rutuja Bhagat
Interview experience
Good
Difficulty level
Easy
Duration
-
Result
-
I applied via Recruitment Consulltant and was interviewed in Nov 2024.
1 Interview Round
1
Technical Round (7 Questions)
- Q1. Difference between bigtable and bigquery. View Answers (1)
- Q2. How to remove duplicate rows from bigquery? find the month of a given date in bigquery. View Answers (1)
- Q3. What operator is used in composer to move data from gcs to bq View Answers (1)
- Q4. Write a code for this - input = [1,2,3,4]
output = [1,4,9,16] View Answers (1)
- Q5. Dataflow vs dataproc. View Answers (1)
- Q6. Architecture of bq. Query optimization techniques in bigquery. View Answers (1)
- Q7. RDD vs dataframe vs dataset in pyspark View Answers (1)
Lakshmi Narayana
Interview experience
Good
Difficulty level
-
Duration
-
Result
-
2 Interview Rounds
1
Technical Round (2 Questions)
- Q1. Explain adf questions in detail View Answers (1)
- Q2. Project related questions Add Answer
2
Technical Round (2 Questions)
- Q1. Project data related questions Add Answer
- Q2. Databricks and SQL interview questions Add Answer
Interview experience
Poor
Difficulty level
-
Duration
-
Result
-
3 Interview Rounds
1
Coding Test Round
Oops dsa sql network
2
Technical Round (2 Questions)
- Q1. Dsa based python question Add Answer
- Q2. Dsa based python question on tress Add Answer
3
Technical Round (2 Questions)
- Q1. Sql question queries Add Answer
- Q2. Sql question query Add Answer
Interview experience
Excellent
Difficulty level
Moderate
Duration
Less than 2 weeks
Result
Selected
I applied via Recruitment Consulltant and was interviewed in Jun 2024.
1 Interview Round
1
One-on-one Round (20 Questions)
- Q1. Tell me about yourself View Answers (1)
- Q2. Project Architecture Add Answer
- Q3. Rate yourself out of 5 in Pyspark , Python and SQL View Answers (1)
- Q4. How to handle duplicates in python ? View Answers (1)
- Q5. Methods of migrating Hive metdatastore to unity catalog in Databricks ? View Answers (1)
- Q6. Read a CSV file from ADLS path ? View Answers (1)
- Q7. There was a table provided on coding screen and asked to write different programs and SQL queries from the table and tell the approach you are taking ? Like age...read more Add Answer
- Q8. How many stages will create from the above code that I have written View Answers (1)
- Q9. Narrow vs Wide Transformation ? View Answers (1)
- Q10. What are action and transformation ? View Answers (1)
- Q11. What happens when we enforce the schema and when we manually define the schema in the code ? View Answers (1)
- Q12. What all the optimisation are possible to reduce the overhead of reducing the reading part of large datasets in spark ? View Answers (2)
- Q13. Write a sql query to find the name of person who logged in last within each country from Person Table ? View Answers (1)
- Q14. Difference between List and Tuple ? View Answers (1)
- Q15. Difference between Rank , Dense Rank and Row Number and when we are using each of them ? View Answers (1)
- Q16. What is List Comprehension ? View Answers (2)
- Q17. Tell me about the performance optimization done in your project ? Add Answer
- Q18. Difference between the interactive cluster and job cluster ? View Answers (1)
- Q19. How to add a column in dataframe ? How to rename the column in dataframe ? View Answers (1)
- Q20. Difference between Coalesce and Repartition and In which case we are using it ? View Answers (2)
Interview Preparation Tips
Topics to prepare for Accenture Data Engineer interview:
- Spark
- Databricks
- SQL
- Python
- ETL
Interview experience
Average
Difficulty level
Moderate
Duration
-
Result
Not Selected
I applied via Walk-in
2 Interview Rounds
1
Technical Round (2 Questions)
- Q1. Difference between rank and dense_rank, Left vs Left anti join View Answers (1)
- Q2. Python list comprehension, SQL query Add Answer
2
Behavioral Round (1 Question)
- Q1. Project related questions Add Answer
Interview Preparation Tips
Interview preparation tips for other job seekers - No response from HR, even after clearing technical and managerial rounds
Skills evaluated in this interview
Abhishek Paithankar
Interview experience
Excellent
Difficulty level
-
Duration
-
Result
-
3 Interview Rounds
1
Aptitude Test Round
Aptitude test involved with quantative aptitude, logical reasoning and reading comprehensions.
2
Technical Round (2 Questions)
- Q1. Tell me your introduction. Add Answer
- Q2. Tell me about your skills. View Answers (1)
3
HR Round (2 Questions)
- Q1. Are you ready relocate,? View Answers (1)
- Q2. Document verification Add Answer
Interview Preparation Tips
Interview preparation tips for other job seekers - If you are fresher first prepare for aptitude, because once aptitude get cleared you will get selected from the large compitition and then focus on your technical knowledge and managerial skills about the company.
ConcertAI Interview FAQs
How many rounds are there in ConcertAI Data Engineer interview?
ConcertAI interview process usually has 2 rounds. The most common rounds in the ConcertAI interview process are Coding Test and One-on-one Round.
How to prepare for ConcertAI 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 ConcertAI. The most common topics and skills that interviewers at ConcertAI expect are Python, Data Structures, SQL, Healthcare and NoSQL.
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People are getting interviews through
based on 1 ConcertAI interview
Referral
100%
Low
Confidence
?
Low Confidence means the data is based on a small number of responses received from the candidates.
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