Photon Interactive Technical Lead Interview Questions, Process, and Tips

Java oops concepts
collections
spring framework

Q1. About project performance improvement of application db performance issues
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Q1. Solid principle implemantion in c#
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Solid principles are a set of design principles that help make software more maintainable, flexible, and scalable.
• Single Responsibility Principle (SRP) - A class should have only one reason to change.

• Open/Closed Principle (OCP) - Software entities should be open for extension but closed for modification.

• Liskov Substitution Principle (LSP) - Objects of a superclass should be replaceable with objects of its subclasses wi...read more
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Q2. Write a code for Entity framework DB connection
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Code snippet for Entity Framework DB connection
• Install Entity Framework NuGet package

• Create a DbContext class

• Define DbSet properties for each entity

• Configure connection string in app.config/web.config

• Use DbContext to interact with the database
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Q3. Get 3 rd highest salary
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To get the 3rd highest salary, we can use a SQL query with the 'LIMIT' and 'OFFSET' keywords.
• Use a SQL query with 'ORDER BY salary DESC' to sort salaries in descending order.

• Use 'LIMIT 1 OFFSET 2' to skip the first two highest salaries and get the 3rd highest salary.

• Example: SELECT salary FROM employees ORDER BY salary DESC LIMIT 1 OFFSET 2;
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Q4. Why we using interface in C#
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Interfaces in C# provide a way to define a contract for classes to implement, promoting code reusability and flexibility.
• Interfaces allow for multiple inheritance in C# by allowing a class to implement multiple interfaces.

• Interfaces help in achieving loose coupling between classes, making the code more maintainable and testable.

• Interfaces are used to define common behavior that multiple classes can share, promoting cod...read more
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Q1. Why you want to change the company
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Q1. First round- Java, Spring boot, Microservices questions. Hacker ranker multiple choice questions where we should score 60℅. Questions was related to java, spring. 40 questions to be completed in 40 minute...read more
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Q1. Second Round-Java streams coding questions, Logical reasoning questions: 1.Snail will climb a wall of height 30 ft. Every 1 hour it climbs 3 ft and falls by 2 ft. How many hours it takes to climb the wall....read more
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Q1. Technical questions related to our technology stack mid level difficulty
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Q2. Components, dependency injection, ci/cd , ngrx store
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Q3. About bitbucket git pipeline,Agile
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Q1. Technical Questions mid to high level difficulty.
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Q1. Package discussion and lots of documentation work
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