2 Blazeclan Technologies Lead Data Engineer Interview Questions & Answers | Complete Prep Guide 2025

Blazeclan Technologies Lead Data Engineer Interview Experiences

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Lead Data Engineer Interview Questions & Answers

Anonymous

posted on 27 Sep 2022

Round 1 - Resume Shortlist

Pro Tip by AmbitionBox:

Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.

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Round 2 - Technical

(2 Questions)

Q1. What is a decorators in python

Ans.

Decorators are a way to modify or enhance the behavior of a function or class without changing its source code.

Decorators are defined using the '@' symbol followed by the decorator name.
They can be used to add functionality to a function or class, such as logging or timing.
Decorators can also be used to modify the behavior of a function or class, such as adding caching or memoization.
Multiple decorators can be applied ...

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Q2. What is a generators in python

Ans.

Generators are functions that allow you to declare a function that behaves like an iterator.

Generators use the yield keyword to return a generator object that can be iterated over.
They allow for lazy evaluation, meaning that they only generate values as needed.
Generators are memory efficient as they do not store all values in memory at once.
They can be used to generate an infinite sequence of values.
Example: def my_gen...

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Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare all the basic python and pyspark questions

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I have got an offer of 34 LPA from TCS and Capgemini . I have 11 years of experience , Azure Developer. Can you please guide / suggest which company should I join . I am confused since both are offering the s... read more

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Senior Software Engineer Interview Questions & Answers

Infosys

Anonymous

posted on 31 Jan 2022

I applied via Referral and was interviewed before Jan 2021. There was 1 interview round.

Interview Questionnaire

1 Question

Q1. Java questions

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Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare basic questions

System Engineer Interview Questions & Answers

Infosys

Anonymous

posted on 22 Feb 2022

I applied via Campus Placement and was interviewed before Feb 2021. There were 3 interview rounds.

Round 1 - Aptitude Test

Aptitude round consists Logical reasoning, General Aptitude, Grammar related questions etc. All are moderate level questions.

Round 2 - Technical

(3 Questions)

Q1. Explain OOPs w.r.t Java

Ans.

OOPs is a programming paradigm that uses objects to represent real-world entities. Java is an OOPs language.

OOPs stands for Object-Oriented Programming System
Java is a class-based OOPs language
Encapsulation, Inheritance, Polymorphism, and Abstraction are the four pillars of OOPs
Objects have state and behavior
Java supports interfaces, which allow for multiple inheritance
Example: A car can be represented as an object wit...

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Q2. Explain about the projects that you have worked on

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Q3. Explain how Java solves machine dependency of code execution

Ans.

Java solves machine dependency by using bytecode and virtual machine.

Java code is compiled into bytecode which is platform-independent
The bytecode is executed by the Java Virtual Machine (JVM) which is platform-specific
JVM translates bytecode into machine code for the specific platform
This allows Java code to run on any platform with a JVM installed
Example: A Java program compiled on Windows can run on Linux or Mac as

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Round 3 - HR