TCS Data Engineer Interview Questions, Process, and Tips

It was easy and basic knowledge can get you through.

3 questions with increasing difficulty.

Q1. Normal Questions which HR asks.
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Q2. Where do you see yourself in five years?
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Q3. Why you want to join TCS?
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Q4. Who is the CEO of TCS?
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1.5 hrs for coding and aptitude

Q1. Rotation of Array
Ans. 
Rotate an array of strings by a given number of positions.
• Create a new array and copy elements from the original array based on the rotation index.

• Handle cases where the rotation index is greater than the array length by using modulo operation.

• Example: Original array ['a', 'b', 'c', 'd', 'e'], rotate by 2 positions -> ['c', 'd', 'e', 'a', 'b']
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Q2. Queue & Stack Algorithm
Ans. 
Queue & Stack Algorithm involves data structures for storing and retrieving data in a specific order.
• Queue follows First In First Out (FIFO) principle, like a line at a grocery store.

• Stack follows Last In First Out (LIFO) principle, like a stack of plates.

• Examples: Queue - BFS algorithm in graph traversal. Stack - Undo feature in text editors.
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Q1. What is cloud computing?
Ans. 
Cloud computing is the delivery of computing services over the internet, including storage, databases, networking, software, and more.
• Cloud computing allows users to access and use resources on-demand without the need for physical infrastructure.

• Examples of cloud computing services include Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform.

• It offers scalability, flexibility, cost-effectiveness, and t...read more
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Q2. Tell about your project experience?
Ans. 
I have worked on projects involving data pipeline development, ETL processes, and data warehousing.
• Developed ETL processes to extract, transform, and load data from various sources into a data warehouse

• Built data pipelines to automate the flow of data between systems and ensure data quality and consistency

• Optimized database performance and implemented data modeling techniques for efficient storage and retrieval

• Worked w...read more
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Maths question and reasoning based

Coding on sql python java level was easy

Q1. Basic salary discussion
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Q2. Joining formalities
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Q3. Why you want to join tcs
Ans. 
I want to join TCS because of its reputation for innovation and growth opportunities.
• TCS is known for its cutting-edge technology solutions

• Opportunities for career advancement and professional development

• Global presence and diverse client base
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Q4. Negotiation related to salary
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Q5. Nothing that's all it was easy
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