PhonePe Senior Software Engineer 2 Interview Questions and Answers

Mainly Leet code easy to medium questions

Q1. Design Parking lot with working code.
Ans. 
Design a parking lot system with working code.
• Create classes for ParkingLot, ParkingSpot, Vehicle, etc.

• Implement methods for parking, unparking, checking availability, etc.

• Use data structures like arrays, lists, or maps to manage parking spots.

• Consider different types of vehicles and parking spot sizes.

• Handle edge cases like full parking lot, invalid inputs, etc.
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Q1. Design notification service.
Ans. 
Design a notification service for sending alerts to users.
• Use a scalable messaging system like Kafka or RabbitMQ for handling notifications.

• Implement different types of notifications such as email, SMS, push notifications.

• Allow users to customize their notification preferences and frequency.

• Include features like scheduling notifications and tracking delivery status.

• Ensure security measures are in place to protect user
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Q1. Question related to resume and different tech stack
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Sorting array, streamapi example etc

Q1. Array manipulation question
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A test that covers all fundamental topics, including networking, object-oriented programming (OOP), and data structures and algorithms (DSA).

Q1. Write code for quick sort
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Q2. Puzzle
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Q1. LLD/Machine coding - Design a social media application with users, posts, comments, likes, etc. There is also an admin who needs to approve post creation and can delete any post they want. Create appropria...read more
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Q1. High-level design - Design a chat-based application like WhatsApp with only user-to-user chat feature (no group chats). Explain and draw out the E2E design by mentioning all the components and design decis...read more
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Q1. Hiring Manager - basic questions like why Razorpay, what are your career goals, what does career growth look like for you, etc.
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Q1. Delete rows from table that are 6 months old from current date
Ans. 
Use SQL query with WHERE clause to delete rows older than 6 months from current date
• Use CURRENT_DATE() function to get current date

• Use DATE_SUB() function to subtract 6 months from current date

• Write a DELETE query with WHERE clause to delete rows older than calculated date
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Q1. Java program on all data structures
Ans. 
Java program on all data structures
• Start by implementing basic data structures like arrays, linked lists, stacks, queues, trees, and graphs

• Use Java built-in classes like ArrayList, LinkedList, Stack, Queue, TreeMap, and HashMap

• Practice implementing algorithms like sorting, searching, and traversal on these data structures
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