_VOIS Senior Software Engineer Interview Questions and Answers

Q1. Java oops concept, core java concepts
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Q1. Springboot, microservices
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String manipulation questions easy not that much hard

Q1. String manipulation
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Q2. Reverse a string according to it's input
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Q1. More questions on interfaces
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Q2. Comparator related questions
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Q1. Stream api coding questins
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Q2. Database questions
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Q1. Node.js question were asked
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Q2. Project questions were also being asked
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Q1. General Behavioural questions
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Q2. Culture fit questions
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Q1. Simple task to fetch cart and display items in the cart
Ans. 
Fetch cart items and display them
• Create a function to fetch cart items from database

• Display the items in the cart on the user interface

• Handle empty cart scenarios

• Consider pagination for large number of items
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Q2. React hooks, life cycle methods, error boundaries, hoc
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Q1. Simple task to fetch characters and their movies
Ans. 
Fetch characters and their movies
• Use API like IMDb or The Movie Database to fetch movie data

• Parse the data to extract characters and their associated movies

• Store the characters and movies in an array of strings
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Q1. Culture based questions
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Q1. What is Node.js event loop and how its work?
Ans. 
Node.js event loop is a mechanism that allows Node.js to perform non-blocking I/O operations asynchronously.
• Event loop is responsible for handling asynchronous operations in Node.js.

• It allows Node.js to perform multiple operations simultaneously without blocking the execution.

• Event loop continuously checks the event queue for new events and executes them in a non-blocking manner.

• Callbacks are used to handle the complet
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Q2. DBMS questions like joins
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- Basic data structures questions.
- Node.js specific questions.

Q1. Basic managerial questions
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Q1. All the questions were from SQL server.
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Q2. How to get 3rd highest salary ?
Ans. 
To get the 3rd highest salary, you can use a SQL query with the 'LIMIT' and 'OFFSET' keywords.
• Use a SQL query to select distinct salaries in descending order.

• Use the 'LIMIT' keyword to limit the results to 3.

• Use the 'OFFSET' keyword to skip the first 2 highest salaries.

• Example: SELECT DISTINCT salary FROM employees ORDER BY salary DESC LIMIT 1 OFFSET 2;
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Q3. Inner join result of 2 table. Table one [1,1,1,1] table two [1,1,1,1,1,1]
Ans. 
The inner join of two tables with duplicate values results in a combined set of common values.
• Inner join combines rows from both tables where the key columns match

• In this case, the result would be [1,1,1,1,1,1] as all values are common in both tables
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Q4. SSIS Package creation.
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Q5. Latest project explanation
Ans. 
Developed a web application for tracking and managing project tasks
• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express

• Utilized MongoDB for database management

• Incorporated authentication and authorization features for user security
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Q1. What is difference between SQL and NoSQL
Ans. 
SQL is a relational database management system, while NoSQL is a non-relational database management system.
• SQL databases are table-based, NoSQL databases are document, key-value, graph, or wide-column stores

• SQL databases use structured query language for defining and manipulating data, NoSQL databases use different query languages

• SQL databases are vertically scalable, NoSQL databases are horizontally scalable

• SQL databa...read more
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Q2. Why is NoSQL better then SQL
Ans. 
NoSQL is better for handling unstructured data, providing scalability and flexibility.
• NoSQL databases are better suited for handling unstructured data like social media posts, user-generated content, and IoT data.

• NoSQL databases provide better scalability as they can easily distribute data across multiple servers, allowing for horizontal scaling.

• NoSQL databases offer more flexibility in terms of data model, allowing fo...read more
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Q3. Explain the data pipeline you have worked on.
Ans. 
Designed and implemented a real-time data pipeline for processing and analyzing user behavior data.
• Used Apache Kafka for real-time data streaming

• Utilized Apache Spark for data processing and analysis

• Implemented data transformations and aggregations using Scala

• Stored processed data in a data warehouse like Amazon Redshift

• Built monitoring and alerting systems to ensure data pipeline reliability
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Q4. Managing team
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Q5. What will you do if you have conflict with your manager.
Ans. 
I would address the conflict directly and professionally, seeking to understand the root cause and find a mutually beneficial solution.
• Schedule a private meeting with the manager to discuss the conflict

• Listen actively to the manager's perspective and express your own calmly

• Seek to find common ground and propose potential solutions

• If necessary, involve HR or a mediator to help resolve the conflict
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Q6. What do you love to do when you are free
Ans. 
I love to spend my free time hiking, reading, and trying out new recipes in the kitchen.
• Hiking in the mountains or local trails

• Reading fiction and non-fiction books

• Experimenting with new recipes and cooking techniques
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Q1. Salary expectations
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Q2. Family background
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