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100 Essential .NET Interview Questions & Answers

Level up your .NET skills and ace your interviews
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Master .NET Unit Testing: 100+ Interview Questions

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300+ L1 Interview Ques .NET + Free Career Chat

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Ratings and feedback

5/5
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Testimonials
5/5
Excellent question answered for Interview Preparation
5/5
When we start learning for interview then we skip conceptual knowledge and when we learn deeply then we faced interview problem. but I really admired sandeep sir notes. where I can cover both things at same time. Thank You
5/5
This set of interview questions is great for rapidly reviewing important ideas. It covers everything from basic to complex subjects in an understandable and useful manner. For developers getting ready for technical interviews, this is an ideal resource
5/5
Excellent And Great materila of Inteview Point of View. Thanks a lot Sandeep
5/5
Excellent Collection for Interview Point of view
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Excellent Collecgtion of Interview Questions related to Javascript, CSS, Html and Bootstrap
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Good Content for interview point of you
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Very helpful to prepare for interviews.

About me

I’m a Full Stack Developer with 10+ years of experience designing and building scalable, high-performance web applications. I specialize in .NET Core for robust backend systems and React.js for responsive, user-friendly frontends, delivering solutions that are both technically sound and business-focused. Over the years, I’ve developed deep expertise in RESTful APIs, microservices, database design (SQL Server, MySQL, MongoDB), and efficient data access using EF Core and Dapper. I’m experienced in integrating a wide variety of third-party services, including payments, messaging platforms, authentication systems, chatbots, push notifications, and NFT/crypto APIs, ensuring seamless interoperability and enhanced platform capabilities. I am committed to clean, maintainable code and best practices, applying SOLID principles, MVC patterns, and Clean Architecture to create systems that are scalable, secure, and easy to maintain. I also prioritize unit testing (xUnit, MSTest, MOQ) to guarantee high-quality software delivery. Beyond technical skills, I thrive in collaborative environments, working closely with product managers, QA, and DevOps teams to deliver projects on time while balancing technical depth with business understanding. I’m passionate about tackling complex challenges, optimizing systems, mentoring teammates, and exploring emerging technologies to stay ahead in the rapidly evolving tech landscape. Whether it’s building a robust backend, a seamless frontend, or integrating complex systems, I bring both expertise and creativity to every project.