20 Advanced Frontend Interview Questions Asked for ₹25L+ Roles

They want engineers who can design scalable systems, optimize performance, and lead frontend architecture decisions.

Here are some challenging questions often asked in high-paying frontend interviews 👇

Frontend Architecture & Design

1️⃣ How would you design a micro-frontend architecture where multiple teams can build and deploy independently?

2️⃣ Compare state management approaches like Redux, MobX, and Recoil. When should each be used?

3️⃣ How would you design and maintain a scalable design system used across multiple products?

4️⃣ What strategies would you use to manage shared packages and dependencies in a monorepo?

Advanced React & Performance

5️⃣ How would you implement Server-Side Rendering with React Server Components while ensuring smooth hydration?

6️⃣ How does React 18 concurrent rendering and Suspense change application architecture?

7️⃣ What strategies do you use for code splitting and lazy loading in large multi-page React apps?

8️⃣ How do you handle data fetching and caching in high-traffic applications using tools like React Query or SWR?

⚙️ Build Systems & Developer Experience

9️⃣ How would you design a CI/CD pipeline for frontend apps supporting staging, canary releases, and production deployments?

🔟 How do you integrate feature flags (LaunchDarkly or similar tools) for gradual feature rollout?

1️⃣1️⃣ What tools do you use for frontend monitoring and observability (error tracking, performance metrics)?

1️⃣2️⃣ How would you implement A/B testing experiments in a React application?

Modern Web & Cross-Platform

1️⃣3️⃣ How would you build a Progressive Web App (PWA) with offline support?

1️⃣4️⃣ What is your strategy for responsive layouts using Flexbox, CSS Grid, and container queries?

1️⃣5️⃣ How would you implement offline-first applications using IndexedDB and background sync?

1️⃣6️⃣ Compare WebSockets, Server-Sent Events, and WebRTC for real-time applications.

Leadership & Engineering Quality

1️⃣7️⃣ How do you enforce code quality and review processes across large teams?

1️⃣8️⃣ How do you identify and systematically reduce technical debt in long-lived projects?

1️⃣9️⃣ How do you mentor junior engineers through technical guidance and architecture discussions?

2️⃣0️⃣ How would you migrate a legacy jQuery application to React or Next.js safely in production?