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technical2026-05-018 min read

Building Modular Backends with a Modern Framework

How to structure modern backend applications for maintainability, testability, and reusability across projects.

A modern framework provides a solid foundation for building server-side applications. But without careful architecture, even a well-structured app built with a modern framework can become a monolithic mess.

The Module Pattern

The key insight: each module should be a self-contained unit with its own controllers, services, repositories, DTOs, and tests. Modules communicate through well-defined interfaces, not by reaching into each other's internals.

Why This Matters

Modular architecture means you can test modules independently, reuse them across projects, and swap implementations without breaking consumers.

This is exactly the philosophy behind Neris. Each module — Auth, RBAC, User, Audit — is independent and can be composed together as needed.

Need help applying this? Book a call with NERIS.

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