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NestJS Development

Professional NestJS development from experienced developers based in Graz, Austria.

NestJS is our preferred backend framework for scalable, enterprise-grade APIs and microservices. Its modular architecture, built on TypeScript with modular dependency injection, enables us to develop maintainable and testable backend systems.

We use NestJS in projects that require a robust API layer - from REST APIs to GraphQL to WebSocket-based real-time applications. Built-in dependency injection, guards and interceptors allow us to cleanly implement complex authentication and authorization logic.

Combined with our frontend stack (React, Next.js), NestJS forms the backbone for full-stack applications that are efficient both in development and in production.

Official website

Capabilities

What We Build with NestJS

REST API Development GraphQL APIs WebSocket & Real-Time Communication Microservice Architecture Dependency Injection & Modularity Authentication & Authorization (JWT / OAuth) Database Integration (TypeORM / Prisma) Task Scheduling & Queues OpenAPI/Swagger Documentation Unit & E2E Testing

Use Cases

Typical Use Cases

Enterprise APIs & Microservices

Scalable backend architectures with modular design, role-based access control and OpenAPI-based documentation for complex business applications.

Real-Time Applications

WebSocket-based systems for live dashboards, chat features and collaborative applications that require instant data updates.

Data Processing Pipelines

Backend systems for processing large data volumes with queue management, scheduling and automated workflows - ideal for reporting and analytics platforms.

References

Selected Projects

Klanglicht Audio Guide
Web Application

Klanglicht - Art Festival of Bühnen Graz

Klanglicht Audio Guide
Soundportal App
Mobile App

Radio Soundportal

Soundportal App
Deposit Insurance Payout Platform
Web Application

Österreichische Raiffeisen-Sicherungseinrichtung eGen (ÖRS)

Deposit Insurance Payout Platform
View all references

FAQ

NestJS FAQ

Why does dectria choose NestJS over Express.js?
NestJS builds on Express (or Fastify) and additionally provides a structured, modular architecture with built-in dependency injection, guards, pipes and interceptors. For enterprise applications, this saves significant effort in maintenance and further development compared to a custom Express architecture.
Can dectria use NestJS with different databases?
Yes, we have experience with PostgreSQL, MariaDB, Microsoft SQL Server and MongoDB in combination with NestJS. As ORM we use TypeORM, Prisma or Sequelize depending on requirements. We always choose the database on a project-specific basis.
Does dectria also offer API design and documentation?
Absolutely. We follow an API-first approach: the OpenAPI specification is written first and serves as the single source of truth. From this spec, we generate type-safe clients and interfaces. Redocly provides interactive documentation, which significantly simplifies both development and integration by third-party systems.

Every project starts with a conversation.

Let us talk about your individual needs and goals.

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