CoinDCX Back End Engineer Interview Questions and Answers

Q1. Python, Django questions Easy to Medium level DSA Discussion on Project and previous work experience Some SQL queries
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Q1. Some Python questions and discussion on work experience Some design question like how you will design backend for some project from scratch Some managerial questions Questions on git
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Q1. Some basic HR questions
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Q1. Ds algo problem solving round. Question was based on graph
Ans. I had to explain the logic and code
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Q2. I was asked only 1 question and i have to write code and explain the logic
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Medium range 2 questions

Q1. Its design round question
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Ios round
questions asked involved questions from storages used in iOS
app life cycle
multiple app login with same creds autocomplete feature

Basic problem solving round
2 medium
1 b/w medium and hard
question were asked :
tree BFS and Stair question
dynamic programming

Q1. Design app like whatsapp.
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Q1. Basic firment round with director.
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Coder pad 1 hour test

Coding testing with 15 questions MCQ based

Q1. 1 or 2 DSA questions, rest tech stack related questions were asked
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Q1. This was a technofunctional round, kind of a managerial round.
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Q1. This was a HR round
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Q1. Reg BW and ABAP and XSA
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Q1. Reg sap BW and ABAP and XSA
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Q1. Company structure
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Online coding test with Sql and python questions

Q1. Details about project and experience
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Q2. Pyspark and databricks questions
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Q3. What is Spark context
Ans. 
Spark context is the main entry point for Spark functionality and represents the connection to a Spark cluster.
• Main entry point for Spark functionality

• Represents connection to a Spark cluster

• Used to create RDDs, broadcast variables, and accumulators
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Q4. What is inheritance
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Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
• Allows for code reusability by creating a new class based on an existing class

• Derived class inherits properties and behaviors of the base class

• Supports the concept of polymorphism and encapsulation

• Example: Class 'Car' can inherit from class 'Vehicle' and inherit its attributes like 'color' and met
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Q5. What is sparkconfig
Ans. 
SparkConfig is a configuration object used in Apache Spark to set various parameters for Spark applications.
• SparkConfig is used to set properties like application name, master URL, and other Spark settings.

• It is typically created using SparkConf class in Spark applications.

• Example: val sparkConf = new SparkConf().setAppName("MyApp").setMaster("local")
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