.NET Core & React Interview Tips: What Matters Most

✅ My .NET Developer Interview Experience – Full Stack Role 🚀 Recently, I had the opportunity to interview for a .NET Full Stack Developer role, and I’d love to share some of the real questions I was asked. These touched on backend, frontend, SQL, logic, and behavioral topics — a great blend that truly tested my full-stack skills. If you're preparing for interviews, I hope this helps! 🧠 Key Interview Questions I Faced: 💾 SQL & Databases 1️⃣ Difference between Stored Procedure vs Function 2️⃣ Primary Key vs Unique Key 3️⃣ Purpose of ORDER BY 4️⃣ Difference between WHERE and HAVING 💻 C# / .NET Core 5️⃣ Value Type vs Reference Type 6️⃣ What is Dependency Injection & why is it used? 7️⃣ Use of async and await 8️⃣ What is a Garbage Value? 9️⃣ Abstract Class vs Abstract Method 🔟 DataSet vs DataReader 1️⃣1️⃣ Real-world code optimization or compression techniques 🌐 Frontend – ReactJS & JavaScript 1️⃣2️⃣ Function vs Class Component in React 1️⃣3️⃣ React Hooks – which ones have you used? 1️⃣4️⃣ What is JavaScript and how is it used? 1️⃣5️⃣ jQuery vs LINQ (interesting comparison!) 🧩 Logical & Problem Solving 🔹 Identify if the following bracket patterns are valid or invalid using loop conditions: `((()))`, `(()())`, `((),`, `)(` 🔹 Count frequency of elements in an array: [a, a, a, b, a, c, b, c, b] 🔹 Find the second highest number in a list or table 🗣️ Behavioral 💬 “Tell me about yourself” 💭 Reflection: This interview reinforced the importance of mastering both core concepts and logical thinking. In real-world development (especially in startups), communication, patience, and problem-solving are just as critical as writing clean code. 🙌 Let’s Connect! 📩 If you’ve faced similar questions or are preparing for tech interviews, I’d love to hear your experience! 💬 Drop a comment or message — let’s support each other and grow together! 🔖 Hashtags : #DotNetDeveloper #FullStackInterview #CSharp #ReactJS #JavaScript #SQLQueries #TechInterview #CodingQuestions #SoftwareEngineering #DevCommunity #ReactHooks #LINQ #JobSearchTips #CareerGrowth #FullStackDeveloper #BackendDeveloper #FrontendDeveloper #MicrosoftStack #EntityFramework

💻 Top Interview Questions – MERN Stack Developer (2025 Guide) Are you preparing for a MERN Stack Developer interview? 🚀 As companies scale digital products, the demand for developers skilled in MongoDB, Express.js, React, and Node.js is at an all-time high. ✅ MERN Stack Developer Interview Prep: Top Q&A Explained This guide highlights the Top Interview Questions asked in MERN Stack interviews, including: 🔹 Core differences between SQL & NoSQL (MongoDB) 🔹 REST API vs GraphQL with practical use cases 🔹 React lifecycle methods & hooks explained with examples 🔹 Error handling and middleware in Express.js 🔹 Optimizing backend with Node.js asynchronous programming 🔹 Authentication & JWT implementation 🔹 Scenario-based coding & debugging questions 📘 Read the complete guide here: 👉 https://lnkd.in/gkdTT2Yv ✨ Why this matters? MERN Developers are expected to design, develop, and deploy scalable full-stack applications. Preparing with these Top Interview Questions ensures you stand out in competitive job markets. 💡 Pro Tip: Interviewers love hands-on examples. Be ready to share projects where you built REST APIs, React dashboards, or real-time apps. 💬 Your Turn: What’s the most challenging MERN Stack interview question you’ve faced? Share in comments ⬇️ to help others prepare! #TopInterviewQuestions #MERNStack #FullStackDeveloper #SoftwareEngineering #WebDevelopment #JavaScript #ReactJS #NodeJS #ExpressJS #MongoDB #FrontendDeveloper #BackendDeveloper #CodingInterview #TechInterviews #Programming #SoftwareEngineer #JSDeveloper #SoftwareDevelopment #100DaysOfCode #DevCommunity #CareerGrowth #InterviewPreparation #DevelopersLife

✨ I am glad to share that I am preparing for Full Stack Developer interviews. While going through some important questions, I realized how valuable it is to stay strong in both frontend and backend fundamentals. Learning never stops, and consistent practice is the key to growth. 🚀 In today’s tech world, being a Full Stack Developer means having knowledge of both frontend and backend along with problem-solving skills. While going through some interview preparation material, I realized how important it is to stay strong in both basics and advanced concepts. Some key areas I found really useful: 🔹 HTML, CSS, JavaScript fundamentals 🔹 React.js & modern frontend frameworks 🔹 Node.js, Express, MongoDB, Spring Boot, Django 🔹 Version control with Git/GitHub 🔹 Understanding system design & APIs 👉 Interview preparation is not only about answering questions but also about building the right mindset, confidence, and practical coding skills. 💡 My thought: Consistent learning, hands-on practice, and clarity in basics make a big difference in interviews. What’s one tip you believe is most important for cracking a Full Stack Developer interview? #FullStackDevelopment #InterviewPreparation #WebDevelopment #JavaScript #React #NodeJS #CareerGrowth

Ace your Node.js interview! Landing that dream job just got easier. **Top 3 Questions:** 1 **Q**: Explain the event loop in Node.js. **A**: It's a single-threaded, non-blocking architecture handling asynchronous operations efficiently. 2 **Q**: What are streams in Node.js and why are they useful? **A**: They handle data chunks efficiently, ideal for large files or real-time data processing. 3 **Q**: Describe the differences between `require()` and `import` **A**: `require()` is CommonJS, `import` is ES modules (newer, more structured). **Pro tip**: Understand asynchronous programming patterns (Promises, async/await) deeply. **Your turn**: Which question challenges you most? #Node.jsInterview #Node.jsJobs #TechCareers #InterviewPrep

🚀 .NET 2025 Interview Questions & Answers 🚀 The .NET ecosystem keeps evolving — from classic ASP.NET to modern .NET 8/9, C# 12 features, Blazor, and Cloud-Native development. If you’re preparing for a .NET developer interview in 2025, here are some hot questions with answers that can help you stay ahead: 🔹 1. What’s new in .NET 8/9 compared to older versions? 👉 .NET 8 introduced Native AOT (Ahead of Time compilation), aspire for cloud-native apps, performance boosts in collections, and Blazor server-side rendering improvements. .NET 9 (preview) continues focusing on performance and cloud-native tooling. 🔹 2. Explain Native AOT. Why is it important? 👉 Native AOT compiles apps directly into machine code (no JIT needed). This reduces startup time, lowers memory usage, and is perfect for microservices, containers, and serverless environments. 🔹 3. How do Minimal APIs differ from traditional Controllers in ASP.NET Core? 👉 Minimal APIs are lightweight, allowing you to define endpoints with minimal boilerplate. Traditional controllers are class-based and better suited for larger projects with complex logic and filters. 🔹 4. What are some new C# 12 features? 👉 Primary constructors for classes/structs, collection expressions ([...]), default lambda parameters, and interceptors are some highlights. 🔹 5. How would you improve performance in Entity Framework Core? 👉 Use Compiled Queries, AsNoTracking(), Split Queries, Batching, and prefer projection with Select instead of loading entire entities. 🔹 6. What is .NET Aspire? 👉 A new cloud-native app model introduced in .NET 8. It helps build distributed applications with built-in support for service discovery, telemetry, health checks, dashboards, and containerized workloads. 💡 Pro Tip: In 2025, interviewers are not just asking about syntax — they want to see how you build scalable, cloud-ready, secure applications with modern .NET. 🔗 If you’re preparing for .NET roles, focus on: ✔ Cloud-native patterns ✔ C# 12 features ✔ Performance tuning (AOT, EF Core, GC improvements) ✔ Blazor & Full-Stack .NET ✔ Async/await & Parallelism ✨ Let me know in the comments if you’d like me to share a full list of 2025 .NET interview prep Q&A in a downloadable PDF. #DotNet #CSharp #InterviewPrep #DotNetDevelopers #CareerGrowth #DotNet8 #DotNet9 #Blazor #Aspire #EntityFramework

🚀 10 React Coding Questions Commonly Asked in IT Companies Practice these questions before your next interview — they’ll boost your confidence and help you stand out 👇 1️⃣ Build a counter component with + and – buttons. Prevent the value from going below 0. 2️⃣ Create a form with input fields (name, email, password). Show validation errors dynamically. 3️⃣ Fetch data from https://lnkd.in/gTqs-2_H and display the first 10 titles with loading & error states. 4️⃣ Create a search bar that filters a list of items in real-time. 5️⃣ Build a search input that calls an API, but only after the user stops typing for 500ms. 6️⃣ Implement a list that loads more items when the user scrolls to the bottom. 7️⃣ Create a protected route component that only allows users with specific roles to access certain pages. 8️⃣ Share state across deeply nested components using Context + useReducer instead of Redux. 9️⃣ Implement a multi-step form where data is preserved when navigating back and forth between steps. 🔟 Given a component that re-renders unnecessarily, identify the issue and fix it with React.memo, useMemo, or useCallback. 👉 Follow me for daily doses of tech wisdom, corporate realities, and relatable IT life. 🚀 #ReactJS #Frontend #InterviewPreparation #JavaScript #FullStack #WebDevelopment #SoftwareEngineer #Learning #Hiring #Jobs #FresherJobs #TechTalks #Software

A game changing moment i experienced in a full stack developer interview. 6 months ago, I prepared my resume with detailed work experience and went to interview for a web developer. That time, I only have one self project and when the interview begin. Recruiter after 2-3 average React.js questions, opened my github codebase and started reviewing my code. Recruiter: You added 12 useStates in a single component...? I nodded with confusion. Recruiter: You are storing authentication tokens in localStorage? Well that was my first project and there were some blunders I made. So after that failed interview, I started working on my concepts + self projects + production level code. I build 3+ projects and then went for a full stack developer interview. Now here comes the game change. Recruiter: Asjad, You have made impressive Projects and your concepts are almost clear. Now we will start asking some scenario based questions. They asked me 7-8 questions and there I barely cleared 4-5. In summary, The Software Market is boomed with freshers making a flooding impact and therefore the hiring managers are making the interviews more and more tough. So, Don't make a mistake by ignoring the fundamentals, mathematics, DSA, Database Architecture and also the System Design if you want to standout in the market. #webdevelopment #frontend #backend #interview

🚀 Most Asked Interview Questions for Full Stack Developers (.NET + Angular) Recently, I faced some common but very important questions in my interview. Sharing them here so they can help others preparing for interviews 👇 🔹 Core & OOPs What is Abstract Class? What is Dependency Injection? What are SOLID Principles? 🔹 API & Frameworks What is API Versioning? What is API Routing? What is Entity Framework? 🔹 Database What is a Database? Types of Indexes in SQL. Difference between Function and Stored Procedures. 🔹 Angular What is Binding and its Types? What is a Form in Angular and its Types? How do we Pass Token in Angular (Interceptor)? What are the Lifecycle Hooks in Angular? 💡 Why this matters: These are fundamental questions that appear in most interviews. Preparing them with clear examples and real-world use cases can make you stand out as a confident candidate. 👉 If you’re also preparing for interviews, let’s connect and grow together! #DotNet #Angular #FullStackDeveloper #WebDevelopment #SQL #EntityFramework #CodingInterview #JobPreparation #SoftwareEngineering #TechCareers

💡 .NET Full Stack Developer Interview Questions – Must Prepare In interviews, we often get a mix of real-world project challenges, conceptual questions, and best practices. Here’s a compiled list of questions that can help in preparing for your next .NET Developer interview 👇 --- 🔹 Project & Core Concepts 1. What challenges have you faced in your projects? 2. Explain the benefits of RESTful services. 3. What are the principles of RESTful APIs? 4. Explain token expiry and its usage in security. 5. Difference between Authentication and Authorization. 6. How is caching implemented in .NET Core? 7. Left join in EF Core. --- 🔹 SQL & Database 8. What is a Temporary Table in SQL and where is it used? 9. Clustered vs Non-Clustered Index (with examples). 10. Difference between SQL and NoSQL databases. 11. Types of Functions in SQL. --- 🔹 Advanced .NET & Best Practices 12. What is Dependency Injection? Explain different types. 13. Disadvantages of Entity Framework. 14. Limitations/Disadvantages of JWT Token. 15. Explain SOLID Principles with examples. --- 🔹 Angular (Frontend) 16. Which libraries in Angular are used to manage expiry? 17. What is an Injector in Angular? 18. What are Directives in Angular (types and examples)? 19. What are Components in Angular? --- ✅ Tip: Always connect your answers with real project examples – that’s what impresses interviewers the most. #DotNetDeveloper #FullStackDeveloper #SQL #Angular #EntityFramework #DotNetCore #SOLIDPrinciples #CodingInterview #InterviewPreparation