NESTJS
BACKENDS
TYPESCRIPT-FIRST

NestJS brings structure to large Node codebases. We model domains clearly, encapsulate integration logic and deliver testable services.

We areNestJSprofessionals

From monoliths to service-oriented – we use NestJS primitives for clean boundaries between HTTP, queues and database access.

Modules, providers and clean dependency injection
DTOs, validation pipes and Swagger/OpenAPI
Auth strategies (JWT, OAuth) and policy guards
Integration with Prisma/ORM and messaging

Image about: We are NestJS professionals

Modular architecture in Node.js

NestJS brings proven concepts inspired by Angular to the server: clear modules, providers and clean export edges between domains.

OpenAPI & validation out of the box

DTOs with class-validator, automatic Swagger documentation and consistent error formats accelerate partner integrations.

Microservices & transport layers

TCP, Redis, MQTT or message queues: Nest unifies different transporters under consistent patterns for handlers and guards.

Testability & scalable teams

DI eases mocking and isolating use cases – ideal when multiple squads work on the same backend.

Real Successes

Toggo App

KIDS ENTERTAINMENT

App
Ionic
Angular

BVB Kids App

HEJA BVB – FÜR KIDS

App
Ionic

KUMHO Tire Europe App

MARKETING-APP FÜR EINE STARKE MARKE

App
React Native
iOS
Android
PWA

Vosdellen App

SCHADENSMELDUNG APPLIKATION

App
iOS
Android

ENRA

SAFE RIDE – DIGITAL INSURANCE

Enterprise
Webdesign
Node.js

Services &solutions

We design and implement NestJS services that fit your infrastructure – including observability.

REST and GraphQL APIs with versioning
Background jobs, outbox pattern and idempotent workers
AuthN/AuthZ, tenancy and audit logging
Performance profiling and load tests before go-live

B2B APIs & partner ecosystems

Stable contracts, rate limits and documented endpoints: NestJS helps scale external integrations without sprawl.

Internal platform teams

Consistent building blocks for health checks, metrics and logging: platform squads can enforce standards without slowing down each team.

Whynextlevels?

Teams grow faster when architecture is predictable. NestJS provides exactly that frame – we fill it with your domain.

Consistent patterns across all services
Better onboarding times for new developers
Stable releases with automated tests
Clear interfaces to frontends and partners

We advise you in all
digital areas

BEREIT, DEINE GESCHÄFTSPROZESSE MIT MAßGESCHNEIDETER SOFTWARE ZU TRANSFORMIEREN?

Ob du bestehende Systeme optimieren oder neue digitale Lösungen einführen möchtest – wir freuen uns darauf, dich kennenzulernen und gemeinsam neue Wege zu gehen. Ein erster Austausch ist der Grundstein für deinen Erfolg.

Slawa Ditzel
Executive Partner

info@nextlevels.de

+49 (0) 2161 539 71 60

NESTJSBACKENDSTYPESCRIPT-FIRST