React + Spring Boot: My Go-To Stack for Internal Applications

For internal web applications — dashboards, approval systems, data management tools — the combination of React on the frontend and Spring Boot on the backend is the stack I reach for most often.

Why Spring Boot on the backend? Its ecosystem is very mature for enterprise needs: Spring Security for auth/authorization, Spring Data JPA for clean database access, and clear conventions that make the codebase easy for other developers to pick up later. For applications that need complex business validation and integration with other systems, Java/Kotlin’s static typing plus Spring’s structure gives me more confidence in reliability.

Why React on the frontend? Its component-based architecture suits UIs with a lot of interactive state — complex forms, tables with filtering/sorting, real-time dashboards. Its ecosystem is also huge, so almost every UI need (date pickers, charts, form validation) already has a library.

How do they connect? Usually I have Spring Boot expose a REST API that React consumes via fetch/axios. For real-time data I sometimes add WebSocket. This separation also lets the frontend and backend be deployed and scaled independently.

The trade-off: this isn’t the fastest stack for small projects or a quick MVP — Spring Boot’s initial setup is heavier than, say, Express.js. But for internal applications meant for long-term use that need maintainability, this is still what I reach for.