Epicor Software Corporation Senior Product Developer Interview Questions and Answers

Q1. Build a recommendation engine for Food Ordering App
Ans. 
Build a recommendation engine for Food Ordering App
• Collect user preferences and behavior data

• Use collaborative filtering to recommend similar items

• Implement machine learning algorithms to personalize recommendations

• Consider factors like location, cuisine, price range, and ratings

• Test and iterate to improve recommendation accuracy
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Q2. How will you integrate the online merchant
Ans. 
Integrating the online merchant involves collaborating with the merchant's technical team to set up API connections and ensure seamless transactions.
• Collaborate with the online merchant's technical team to set up API connections

• Ensure seamless transactions by testing the integration thoroughly

• Provide support and training to the merchant's team on how to use the integrated system
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Q1. Tell us about your experience.
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Q2. In english, give me a feedback you received lately.
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Q1. Brief explanation of SOLID principles
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Q2. Ref vs out arguments
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Aptitude,reasoning,verbal,C language,Java,C++

Q1. What is interface in JAVA
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Q2. Explain OOPS in JAVA
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Q1. How to create restfull api
Ans. 
To create a RESTful API, define endpoints, use HTTP methods, handle requests and responses, and follow REST principles.
• Define endpoints for different resources (e.g. /users, /products)

• Use HTTP methods (GET, POST, PUT, DELETE) for CRUD operations

• Handle requests and responses in JSON format

• Follow REST principles like statelessness, uniform interface, and client-server architecture
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Q2. How to do pagination in jpa
Ans. 
Pagination in JPA allows fetching a subset of results from a query.
• Use the setFirstResult() method to set the starting index of the results to retrieve

• Use the setMaxResults() method to set the maximum number of results to retrieve

• Combine setFirstResult() and setMaxResults() to implement pagination
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Q1. Project based backend and frontend
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Q2. How to connect to backend
Ans. 
To connect to the backend, you can use APIs, database connections, or web services.
• Use APIs to send and receive data between the frontend and backend

• Establish database connections to retrieve and store data

• Utilize web services for communication between different systems
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Q1. Not available, PFB
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Q2. Please find below
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How to reverse linked list.

Q1. What selection sort.
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Q2. What is dynamic memory allocation.
Ans. 
Dynamic memory allocation is the process of allocating memory during program execution.
• Allows programs to request memory at runtime

• Helps in efficient memory management

• Commonly used in languages like C and C++

• Example: using malloc() function in C to allocate memory for an array
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Q1. Dependency injection in c#
Ans. 
Dependency injection in C# is a design pattern where dependencies are injected into a class rather than the class creating them itself.
• Dependency injection helps in achieving loose coupling between classes.

• It makes the code more testable and maintainable.

• There are different ways to implement dependency injection in C#, such as constructor injection, property injection, and method injection.
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Q2. Opps related questions inheritance, polymorphism, abstract classes and interfaces
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Q3. Ooops knowledge should be perfect
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