EPAM Systems Senior Developer Interview Questions, Process, and Tips

30 mins codility test with different topics from aptitude, react and javascript

Q1. React app creation to toggle dark and light mode
Ans. 
Use React state to toggle between dark and light mode in a web app
• Create a state variable to track the current mode (dark or light)

• Use CSS classes to style the app differently based on the current mode

• Implement a button or toggle switch to allow users to switch between modes
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Q2. Create canBalance in javascript for substring in arrays whose sum is equal
Ans. 
Create a function in JavaScript to check if a substring in an array can be split into two parts with equal sum.
• Iterate through the array and calculate the total sum of all elements.

• Iterate through the array again and check if there is a point where the sum of elements on the left side is equal to the sum of elements on the right side.

• Return true if such a point is found, otherwise return false.
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Q1. Two Sum to a given sum
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Q1. Longest Palindome Substring
Ans. 
Find the longest palindrome substring in an array of strings.
• Iterate through each string in the array

• Check for palindromes within each string

• Keep track of the longest palindrome found
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Q1. Techincal coding question
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Q2. Project related questions
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Q1. Generic project duscussion and salary
Ans. 
Discussing project details and negotiating salary for Senior Developer position.
• Highlighting past project successes and challenges

• Discussing technical skills and experience relevant to the role

• Negotiating salary based on market rates and personal expectations
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