USA YELP Senior Software Engineer Interview Questions and Answers

Q1. Node JS internal
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Q2. Previous project discussion
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Q1. Questions on basis of elastic search
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Q1. Design hld interview asked question
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Q2. Design lld asked question
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Q1. Design pattern experience
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I have extensive experience with various design patterns such as Singleton, Factory, Observer, and MVC.
• Implemented Singleton pattern to ensure only one instance of a class exists

• Utilized Factory pattern to create objects without specifying the exact class

• Implemented Observer pattern for event handling and notifications

• Utilized MVC pattern for separating concerns in a software application
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Q1. Easy DSA questions on string manipulation
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Q1. Build an MVC architecture
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MVC architecture separates an application into Model, View, and Controller components for better organization and scalability.
• Model represents the data and business logic

• View displays the data to the user

• Controller handles user input and updates the model

• Example: Model - User class with properties like name, email; View - HTML template to display user info; Controller - User controller to handle user actions
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Q1. Discussed previous job experiences.
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Q2. Was asked if I am comfortable working on weekends/late nights during emergencies.
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Q1. What are your strengths/weaknesses.
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Q1. Design Notification Observer Design Pattern, if not provided iOS.
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Notification Observer Design Pattern is used to establish a one-to-many relationship between objects.
• Create a subject class that maintains a list of observers and notifies them of any state changes.

• Observers register themselves with the subject to receive notifications.

• Use protocols and delegates in iOS to implement the observer pattern.

• Example: NotificationCenter in iOS uses the observer pattern to broadcast notificat
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Q1. Based on tree data structure
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Q1. Mangerial round. Manager also asked some technical questions on iOS.
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Q1. Salary discussion
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Simple ds algo and knowledge of nodejs

Q1. Simple question about your previous job
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Q2. Previous salary and previous work exp
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Related to Dp and other questions is related to array like reverse and find duplicate in an array, String matching Questions