Airpay Payment Services Senior Software Developer Interview Questions and Answers

Q1. Diff between react and jQuery
Ans. 
React is a modern JavaScript library for building user interfaces, while jQuery is a fast and concise JavaScript library for DOM manipulation.
• React is component-based, promoting reusability and modularity.

• React uses a virtual DOM for efficient updates, while jQuery directly manipulates the DOM.

• React is declarative, making it easier to reason about the UI, while jQuery is imperative.

• React is typically used for single-pa...read more
Answered by AI
Add your answer

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.
Answered by AI
Add your answer
Q2. Design a Linked List
Ans. 
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)
Answered by AI
Add your answer

Q1. About yourself. Projects worked upon
Add your answer
Q2. Why want to join Ocrolus?
Add your answer

3 dsa questions medium level

Q1. 2 medium level dp questions based on string and stocks
Add your answer
Q2. One hard question based on graph
Add your answer

Q1. Hr questions and java , springboot questions etc
Add your answer

Min and max value from an array of integers, reverse of a string

Q1. Data Structures, Algorithms, Understand Common Problem Patterns,
Add your answer
Q2. Advance Laravel and PHP
Add your answer

Q1. Data Structure and algorithm
Add your answer
Q2. System design question
Add your answer

Q1. How dis you tackle the one incident where you disagree with the team lead approach?
Add your answer
Q2. How do you make sure to deliver on time when there are uncertainty?
Ans. 
To deliver on time despite uncertainty, I prioritize tasks, communicate effectively, set realistic deadlines, and have contingency plans.
• Prioritize tasks based on importance and impact on project timeline

• Communicate effectively with team members and stakeholders to address any uncertainties or roadblocks

• Set realistic deadlines taking into account potential delays or uncertainties

• Have contingency plans in place to mitig...read more
Answered by AI
Add your answer

Round one consist of coding problems and there's a minimum criteria of solving 2 problems at least to clear this round

Q1. First question was a coding question, merge intervals leetcode
Add your answer
Q2. Second question was again of leetcode, compare strings
Add your answer

Test was based on arrays and some dsa concepts.