Volante Technologies Senior Software Engineer Interview Questions and Answers

Java coding questions, basic Java questions.

Q1. Java basics questions.
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Q2. Live coding.
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Q1. Discussion on previous experience and projects.
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Q2. System design question
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Q1. Questions on SQL, Java advanced, personal projects, Java frameworks, UI based questions, Agile methodologies.
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Q2. Interview discussion with the whole team.
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Q1. Benefits discussion.
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Q2. Salary discussion.
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DS, Algo, DP, Greedy, Stack, Heap

Q1. System Design a DropBox
Ans. 
Design a scalable cloud storage system similar to DropBox.
• Use distributed file system for storing files across multiple servers.

• Implement data deduplication to save storage space.

• Use client-side encryption for security.

• Implement file synchronization across devices.

• Utilize load balancing to distribute user requests.

• Implement version control for files.

• Use metadata for efficient file organization.
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Q2. Design a Linked List
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A linked list is a linear data structure where each element is a separate object with a reference to the next element.
• Start with a Node class that has data and a reference to the next node

• Create a LinkedList class that manages the nodes and provides methods like insert, delete, and search

• Example: Node class - data, next; LinkedList class - head, insert(data), delete(data), search(data)
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Q1. About yourself. Projects worked upon
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Q2. Why want to join Ocrolus?
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Min and max value from an array of integers, reverse of a string

Q1. Data Structures, Algorithms, Understand Common Problem Patterns,
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Q2. Advance Laravel and PHP
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Q1. Basic oop's concept, sql query, ORM tool
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Q2. Spring and Spring boot difference
Ans. 
Spring is a framework for building Java applications, while Spring Boot is a tool for simplifying the setup and development of Spring applications.
• Spring is a comprehensive framework that provides support for various functionalities like dependency injection, aspect-oriented programming, and more.

• Spring Boot is an opinionated tool that simplifies the setup and development of Spring applications by providing defaults an...read more
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Q3. Find out max salary using java 8
Ans. 
Using Java 8, find the maximum salary from a list of salaries.
• Use Stream API to convert the array of salaries to a stream

• Use the max() method to find the maximum salary

• Use Comparator to compare salaries
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Machine coding round.

Q1. Algorithm to calculate top k flight from source to destinaton.
Ans. 
Use Dijkstra's algorithm to find the top k shortest paths from source to destination.
• Implement Dijkstra's algorithm to find the shortest paths from source to all other nodes.

• Store the top k shortest paths found in a priority queue or heap.

• Return the top k shortest paths as the result.
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Q1. Next Greater Element in an array
Ans. 
Find the next greater element in an array for each element
• Iterate through the array and for each element, find the next greater element

• Use a stack to keep track of elements whose next greater element is not yet found

• If the current element is greater than the top element of the stack, pop the stack and mark the popped element's next greater element as the current element

• Push the current element onto the stack

• If there ar...read more
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Q2. Question based on Sql inner join
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Js coding question and mcq

Q1. Basic and Advanced Js concepts
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Q2. Basics of Html css
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Q3. Front-end related questions and scenarios based questions
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Q1. Tell me about you self
Ans. 
I am a highly experienced software engineer with a passion for problem-solving and a strong background in developing innovative solutions.
• Over 10 years of experience in software development

• Proficient in multiple programming languages such as Java, Python, and C++

• Strong problem-solving skills demonstrated through successful project completions

• Experience working in Agile development environments

• Excellent communication an
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Q2. Situation based questions
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Q3. Salary negotiation
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