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ZeMoSo Technologies Senior Software Engineer 1 Interview Questions and Answers
7 Interview questions
Node.js event driven architecture is a non-blocking, asynchronous model where events trigger callbacks.
Node.js uses an event loop to handle asynchronous operations.
Callbacks are registered for specific events and executed when the event occurs.
Event emitters in Node.js trigger events that are handled by listeners.
Example: Reading a file asynchronously in Node.js using fs module.
Convert a given string into sub-strings based on the number of rows in a zig-zag pattern and display as a single string.
Create an array of strings with the number of rows specified
Iterate through the input string and distribute characters in a zig-zag pattern
Concatenate the sub-strings row by row to form the final output string
Count the continuous unique characters in a given string.
Iterate through the string and keep track of the current character and its count
If the current character is different from the previous one, print the count and reset it
Handle both uppercase and lowercase characters separately
Use hash set to track unique elements while iterating through array and modify array in-place
Iterate through array and add elements to hash set to track unique elements
Modify array in-place by removing duplicates using hash set
Return the size of the hash set as the number of unique elements
Check if a string of parentheses is valid
Use a stack to keep track of opening parentheses
Iterate through the string and push opening parentheses onto the stack
When encountering a closing parenthesis, pop from the stack and check if it matches the corresponding opening parenthesis
If stack is empty at the end and all parentheses have been matched, the string is valid
Multiple choice questions on NodeJS internals
Node.js is an open-source, cross-platform JavaScript runtime environment that executes JavaScript code outside of a web browser.
It uses the V8 JavaScript engine from Google, which compiles JavaScript directly into machine code.
Node.js has a non-blocking, event-driven architecture that makes it lightweight and efficient for handling I/O operations.
Common Node.js internal...
Binary search is a divide and conquer algorithm that efficiently finds the target value within a sorted array.
Divide the array in half and compare the target value with the middle element
If the target value is smaller, search the left half. If larger, search the right half
Repeat the process until the target value is found or the subarray is empty
ZeMoSo Technologies Senior Software Engineer 1 Interview Experiences
10 interviews found
Anonymous
Selected
I applied via Approached by Company and was interviewed in Dec 2024. There were 3 interview rounds.
(1 Question)
- Q1. Explain Node.js event driven architecture.
- Ans.
Node.js event driven architecture is a non-blocking, asynchronous model where events trigger callbacks.
Node.js uses an event loop to handle asynchronous operations.
Callbacks are registered for specific events and executed when the event occurs.
Event emitters in Node.js trigger events that are handled by listeners.
Example: Reading a file asynchronously in Node.js using fs module.
(1 Question)
- Q1. DSA question, JavaScript questions, node.js, database and cloud
(1 Question)
- Q1. Code optimisation
I applied via Approached by Company and was interviewed in Nov 2024. There were 3 interview rounds.
2 Coding questions and Java & Spring Boot MCQs
Coding questions were on Arrays, File System in Java.
(1 Question)
- Q1. Convert a String into sub-strings based on the number of given rows in a zig-zag pattern and display as a single string P A H N I/P: "paypalishiring...
- Ans.
Convert a given string into sub-strings based on the number of rows in a zig-zag pattern and display as a single string.
Create an array of strings with the number of rows specified
Iterate through the input string and distribute characters in a zig-zag pattern
Concatenate the sub-strings row by row to form the final output string
(1 Question)
- Q1. Count the continuous unique character from given string "aaaaBbbbCDEaAb", O/P: a4 B4 C1 D1 E1 a2 b2
- Ans.
Count the continuous unique characters in a given string.
Iterate through the string and keep track of the current character and its count
If the current character is different from the previous one, print the count and reset it
Handle both uppercase and lowercase characters separately
Interview Preparation Tips
shaikh arbaz
Selected
I applied via LinkedIn and was interviewed in Sep 2024. There were 3 interview rounds.
It was Coding Test of around 90 mins , Technical MCQ and 2 Coding Question was asked
(2 Questions)
- Q1. Multiple MCQ on NodeJS Internals
- Ans.
Multiple choice questions on NodeJS internals
Node.js is an open-source, cross-platform JavaScript runtime environment that executes JavaScript code outside of a web browser.
It uses the V8 JavaScript engine from Google, which compiles JavaScript directly into machine code.
Node.js has a non-blocking, event-driven architecture that makes it lightweight and efficient for handling I/O operations.
Common Node.js internals top...
- Q2. Project Based Questions
(2 Questions)
- Q1. 2 DSA Questions
- Q2. Question on LLD/HLD for Online food delivery Platform
Interview Preparation Tips
Skills evaluated in this interview
Yash Purwar
I appeared for an interview in Apr 2025, where I was asked the following questions.
- Q1. Basic java questions along with the SpringBoot questions.
- Q2. DSA questions on both round for the String, Array and Stack.
Interview Preparation Tips
Selected
I applied via LinkedIn and was interviewed in May 2024. There were 3 interview rounds.
Basic questions on Java, Spring boot and Angular
(2 Questions)
- Q1. Core Java basic questions
- Q2. Spring Boot and Angular
(3 Questions)
- Q1. Binary Search Algorithm
- Ans.
Binary search is a divide and conquer algorithm that efficiently finds the target value within a sorted array.
Divide the array in half and compare the target value with the middle element
If the target value is smaller, search the left half. If larger, search the right half
Repeat the process until the target value is found or the subarray is empty
- Q2. Valid Parenthesis String
- Ans.
Check if a string of parentheses is valid
Use a stack to keep track of opening parentheses
Iterate through the string and push opening parentheses onto the stack
When encountering a closing parenthesis, pop from the stack and check if it matches the corresponding opening parenthesis
If stack is empty at the end and all parentheses have been matched, the string is valid
- Q3. Getting number of unique elements of array with in-place modification
- Ans.
Use hash set to track unique elements while iterating through array and modify array in-place
Iterate through array and add elements to hash set to track unique elements
Modify array in-place by removing duplicates using hash set
Return the size of the hash set as the number of unique elements
Interview Preparation Tips
Skills evaluated in this interview
Selected
I appeared for an interview in Apr 2025, where I was asked the following questions.
- Q1. Basic python and framework questions.
- Q2. Low-medium level DSA questions.
Chand Kiran Singh
Selected
I applied via Naukri.com and was interviewed in May 2024. There were 3 interview rounds.
(2 Questions)
- Q1. Nodejs related questions
- Q2. Reactjs related questions
It was related to Hashing, Binary search and other code optimisation techniques.
(2 Questions)
- Q1. Overall experience
- Ans.
I have over 8 years of experience in software development, specializing in scalable web applications and team leadership.
Led a team of 5 developers in creating a microservices architecture for an e-commerce platform, improving scalability by 40%.
Developed a real-time data processing application using Apache Kafka, which reduced data latency by 30%.
Implemented CI/CD pipelines using Jenkins and Docker, resulting in a 50%...
- Q2. Salary discussion
Interview Preparation Tips
- Node.Js
- React.Js
Selected
I applied via LinkedIn and was interviewed in Feb 2024. There were 2 interview rounds.
(1 Question)
- Q1. First round was coding test and technical test. I was asked about the project I have worked on and some related questions and one coding test related to string manipulation.
(1 Question)
- Q1. Some technical questions related to my work and 2 coding questions were asked.
I applied via LinkedIn and was interviewed in Sep 2023. There were 3 interview rounds.
Core Java, Spring, Spring boot, SQL
(2 Questions)
- Q1. Past project details
- Q2. Core Java, spring boot, spring, Java 8 streams questions
Selected
I applied via LinkedIn and was interviewed in Sep 2023. There were 3 interview rounds.
Online platform used to test coding skills.
(1 Question)
- Q1. Interviewer asked questions regarding Java, SpringBoot and SQL.
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ZeMoSo Technologies Senior Software Engineer 1 Reviews and Ratings
based on 5 reviews
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