Think Future Technologies Data Engineer Interview Questions and Answers

Basic aptitude test and was unproctored

Q1. It was a online technical round
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Q1. What is singleton design pattern
Ans. 
Singleton design pattern restricts the instantiation of a class to a single instance and provides global access to it.
• Used when only one instance of a class is required throughout the application

• Provides a global point of access to the instance

• Implemented using a private constructor, static method, and static variable

• Example: Logger class, Database connection class
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Q2. C# LINQ queries for group and sum data from data table
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C# LINQ queries for group and sum data from data table
• Use GroupBy() method to group data based on a specific column

• Use Sum() method to calculate the sum of a column

• Use Select() method to select the required columns
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Q3. Solid design principles
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Solid design principles are a set of guidelines for writing maintainable and scalable code.
• Single Responsibility Principle (SRP) - each class should have only one responsibility

• Open/Closed Principle (OCP) - classes should be open for extension but closed for modification

• Liskov Substitution Principle (LSP) - subclasses should be able to replace their parent classes without affecting the program's correctness

• Interface Se...read more
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Q4. OOPS concepts ,like association and all
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MCQ questions on OS, JS and HTML

Basic Questions from resume. String/Array DSA questions

Dp, trees and basic time complexity

Q1. Tell me about your self
Ans. 
I am a software engineer with 5 years of experience in developing web applications using Java, Spring, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring, and Angular

• Strong problem-solving skills

• Experience working in Agile development environment
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Q2. Projects and intership
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Coding Rount
DSA Round + Puzzle
SQL + Project Discussion
JS

Q1. Phone screen about previous experience
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Q1. Mobile app development basics
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Q1. Culture fit questions
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Q1. System design for can service
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Q2. Objective questions on sql query
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Includes basic aptitude question with additional questions based on coding languages fundamentals.....

Q1. Question were based on oops concepts. My next question was write a code of binary search and explain it and lastly I was asked an aptitude question ...
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Q2. Write a code of binary search and explain it
Ans. 
Binary search is a search algorithm that finds the position of a target value within a sorted array.
• Divide the array into two halves

• Compare the target value with the middle element

• If the target value matches the middle element, return its position

• If the target value is less than the middle element, search the left half of the array

• If the target value is greater than the middle element, search the right half of the arra...read more
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