Swiss Re Senior Data Engineer Interview Questions and Answers

Q1. End to End project Architecture and data pipeline working
Ans. 
End to end project architecture involves designing and implementing a data pipeline to process and analyze data from various sources.
• Define project requirements and goals

• Design data architecture including data sources, storage, processing, and analytics tools

• Implement data pipeline to extract, transform, and load data

• Ensure data quality and consistency throughout the pipeline

• Monitor and optimize performance of the data...read more
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Q2. Optimization performed in current project
Ans. 
Implemented query optimization techniques to improve performance in data processing.
• Utilized indexing to speed up data retrieval

• Optimized SQL queries by rewriting them for better performance

• Implemented caching mechanisms to reduce redundant data processing
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Q3. SQL query to delete Duplicates using CTEs
Ans. 
Using Common Table Expressions (CTEs) to delete duplicates in SQL query
• Use a CTE to identify duplicates by ranking rows based on a unique identifier

• Delete rows with duplicate ranks in the main query
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Q4. Basic Python theory questions on lists and tuples and dictionaries
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Q5. Reverse a list without inbuilt functions
Ans. 
Reverse a list without using inbuilt functions
• Create two pointers, one at the start and one at the end of the array

• Swap the elements at the two pointers and move them towards the center until they meet

• Repeat the process until the entire list is reversed
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Q1. End to End Project implementation
Ans. 
End to end project implementation involves taking a project from conception to completion, including planning, development, testing, and deployment.
• Define project goals and requirements

• Design data pipelines and architecture

• Develop and implement data processing algorithms

• Test and validate data quality and accuracy

• Deploy and monitor the project in production

• Iterate and improve based on feedback
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Q2. ETL Data warehousing concepts like CDC,SCD & Schema Design
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Q3. Question on Data Mesh & Architecture Design for ETL
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Q4. SQL joins, number of records for each join
Ans. 
SQL joins combine data from two or more tables based on a related column between them.
• Different types of SQL joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• The number of records in the result of a join depends on the type of join and the data in the tables.

• For example, an INNER JOIN will only return records that have matching values in both tables, while a LEFT JOIN will return all records from the left...read more
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They will ask from you resume

Q1. Mostly related to your work experience
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Q1. Most related to your skill sets
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Q1. Mostly related to your skills sets
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Q1. Behavioural Round to check attitude and behaviour
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Q1. He discussion related salary and other stuff
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First round will be aptitude test

Q1. Why should I hire you
Ans. 
I have a strong analytical background, excellent problem-solving skills, and a proven track record of delivering actionable insights.
• I have a degree in data analytics and relevant work experience

• I am proficient in statistical analysis and data visualization tools such as Python, R, and Tableau

• I have successfully completed projects where I identified trends and patterns in data to drive business decisions
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Q2. Tell me about your self
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Q1. Salary expectation
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Q2. Position of the candidate
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Basic 10 apti question

Basic 5 python question

Basic 5 SQL question

Q1. They asked two python program.
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Q1. They asked one SQL question
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Q1. Just question based on my resume.
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Q1. Sql indexing. window function.
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Q2. Many other sql questins were there
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Q1. 5 year goal. where do you see yourself.
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Q1. Easy coding questions
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Q1. DSA questions , palindrome
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Q1. Why are you joining this company
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Q1. What is joins in SQL?
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column.

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column;
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Q1. How do you maintain your work life balance?
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Q1. I interested this words
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Q2. I interested this words
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Q3. I want looking for IT sector
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Q4. Any questions update
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