So, you’ve just wrapped up your Full Stack Developer course in Chennai or maybe you’re a few months in and already thinking about job interviews. Good move.
The Chennai tech scene is thriving right now, and companies are actively hiring people who can work across the entire stack. But here’s the thing: when you step into that interview room, it’s not just about what you’ve learned, it’s about how well you can explain it, solve problems, and think like a developer.
Let’s go over some of the most common questions hiring managers ask and what they really want to hear when they ask them.
1. REST vs GraphQL — What’s the Difference?
This one comes up a lot. It’s not just about listing pros and cons they’re testing if you understand how real-world apps handle data.
How to answer:
Talk about structure, efficiency, and when you’d use GraphQL over REST (like when the client needs just specific data, not a whole blob of it). Bonus points if you’ve used both in a project.
2. What Is the Role of Webpack or Babel in Front-End Development?
They’re not looking for a textbook answer here. They just want to know if you’ve worked with modern front-end setups.
Tip:
Say something like, “Webpack bundles my JS and assets efficiently, Babel helps me write modern JavaScript without worrying about browser support.” Then maybe mention how you configured it in your course project.
3. How Do You Handle State in React or Angular?
They want to see how you structure your frontend. Are you just using basic props and hooks, or do you know when to bring in something like Redux or NgRx?
Be honest, but be specific. Mention how you managed state in one of your recent apps and why that method worked well.
4. What’s Your Debugging Process Like?
This question is less technical and more about mindset. Talk through your steps when something breaks console logs, stack traces, breaking problems into chunks, checking Git diffs, etc.
Don’t be afraid to admit you use Google. What matters is how you troubleshoot, not pretending you never make mistakes.
5. Walk Me Through a Project You’ve Worked On
This is your chance to shine. Don’t just list tech stacks, tell a story.
Why did you build it? What challenges came up? What would you improve now? If it was part of your course, highlight the teamwork or tech decisions you made. This helps interviewers picture you in their dev team.
6. SQL vs NoSQL – What’s the Real Difference?
Keep it simple. Relational vs non-relational. Tables vs documents. Transactions vs flexibility.
Use real examples: “I used MongoDB in my MERN project for dynamic data, but I’d go with PostgreSQL for something like a banking app that needs strong data integrity.”
7. What Is CORS and Why Does It Matter?
This is one of those things that catches every dev off guard at some point. If you’ve ever dealt with CORS errors during your course, talk about it. Explain what it is, why browsers enforce it, and how you fixed it (proxy, headers, etc.).
8. How Do You Keep Up With New Tools and Tech?
Interviewers want to see curiosity here. Mention some newsletters, blogs, or channels you follow or meetups in Chennai, if you’ve attended any.
It shows that you’re not just coasting on course material, you’re staying current.
9. Have You Used CI/CD Tools Like GitHub Actions or Jenkins?
Even junior devs are expected to know a bit about deployment pipelines. Talk about whatever experience you’ve had even if it’s just setting up auto-deploy from GitHub to Netlify or Vercel.
10. How Do You Make Sure Your Code Is Clean and Team-Friendly?
This is a good moment to talk about Git, pull requests, naming conventions, using linters, or writing comments. If you’ve done pair programming or code reviews during your course, mention that too.
Conclusion
Preparing for a Full Stack interview doesn’t mean memorizing every possible question. It’s more about understanding the tools you’ve used, being honest about what you know, and showing that you’re ready to grow.
If you’re just getting started and still feel unsure, that’s totally normal. What matters is that you’re building real projects, practicing consistently, and staying curious. Need a course that prepares you for both real-world coding and interviews?
Check out our Full Stack Developer Course in Chennai. It’s designed to take you from beginner to job-ready, with hands-on projects, mock interviews, and career support built-in.
