Epsilon Senior Engineer Interview Questions and Answers

Q1. Python, sql, etl, cloud, web tool
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Q1. Functional question and write some sql basic query
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Q1. Basic question on project
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Q1. Salary negotiation and check behaviour qiestion
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They gave me case study in interview based on that I had provide the solution.

Q1. They asked question regarding SQL, statistics and some project related questions
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Q1. What is Indexing in Mysql
Ans. 
Indexing in MySQL is a technique to improve the performance of database queries by creating a data structure that allows for faster data retrieval.
• Indexes are created on one or more columns of a table.

• They help in speeding up the search, sorting, and joining of data.

• Indexes can be created using different algorithms like B-tree, hash, or bitmap.

• Using indexes appropriately can significantly enhance query performance.

• Exam...read more
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Q2. Opps concepts in php
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Object-oriented programming concepts in PHP
• Encapsulation: bundling data and methods together in a class

• Inheritance: creating new classes based on existing ones

• Polymorphism: using a single interface to represent different types

• Abstraction: hiding unnecessary details and exposing only essential features

• Class: blueprint for creating objects

• Object: instance of a class

• Method: function defined inside a class

• Property: variabl
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Q1. Talk about yourself
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Q2. What is your professional experience
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Simple SQL questions

Reasoning and logic base qus

Q1. About metrics like Cpc, cvr
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Q1. Discuss about previous work
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Q1. Profile Related
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Q2. Product management
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Q1. Basic JavaScript and React.js questions
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Q2. Questions on functions, hooks and DOM
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Q3. Questions on SSR
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Q4. Questions on strings and arrays
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Api related questions