Tracxn Senior Full Stack Developer Interview Questions and Answers

I prepared the design doc by outlining the requirements, architecture, data flow, and user interactions.

• Outlined the requirements and goals of the feature

• Defined the architecture and technologies to be used

• Described the data flow and interactions between components

• Included wireframes or mockups for user interfaces

• Listed potential edge cases and how to handle them

Design a parking system with APIs for managing parking spots and reservations.

• Create API for adding new parking spots with details like location, availability, and pricing

• Create API for listing available parking spots based on location and availability

• Create API for reserving a parking spot with user details and duration

• Create API for cancelling a parking reservation

• Response object for adding parking spot: { success: true, message: 'Parking spot added successfully' }

• Response ...read more

Developed a real-time chat feature for a social networking platform.

• Implemented WebSocket technology for instant messaging

• Designed user interface for chat window with message history

• Integrated push notifications for new messages

• Developed backend logic for message encryption and decryption

I solve complex production environments by identifying issues, optimizing performance, and implementing solutions.

• Identifying bottlenecks and optimizing performance

• Troubleshooting and resolving production issues

• Implementing scalable solutions for high traffic websites

• Working with cloud services like AWS or Azure

• Automating deployment processes with tools like Jenkins or Docker

Breadcrumbs in React can be built using a combination of state management and conditional rendering.

• Create a state variable to store the breadcrumb data.

• Update the state variable as the user navigates through the application.

• Render the breadcrumbs component with the data stored in the state.