NestJS Development

High-performance NestJS development

We build APIs, GraphQL and microservices with NestJS 10 and strict TypeScript on a modular architecture that grows with your product.

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Core stack
NestJS 10TypeScript 5PrismaGraphQLOpenAPINATS / Kafka
NestJS logo
AppModule
src/orders
DI
  • @Controller('orders')
  • @Injectable() OrdersService
  • @Module · providers · exports
Why NestJS

An opinionated framework that speeds up your team while keeping control of the architecture.

NestJS enforces a modular architecture that scales from a small API to a microservices platform. Your team reads the code, understands it and ships.

01

Opinionated modular architecture

Modules, controllers and providers with a clear pattern. Each feature lives in its own module, with explicit boundaries and declared dependencies.

02

Strict TypeScript end to end

Strong typing across controllers, services, DTOs and responses. Validation with class-validator and class-transformer integrated into the request lifecycle.

03

Native dependency injection

Angular-inspired DI container. Decoupled services, configurable scopes and clean swap in tests with easily mockable providers.

04

Decorators, pipes, guards and interceptors

Declarative request pipelines: validation, authentication, transformation and logging in reusable layers applied at global, module or route level.

05

First-class OpenAPI and GraphQL

Swagger documentation generated from decorators and code-first GraphQL schemas with Apollo. The contract lives in the code and stays in sync on its own.

06

Testing with DI from day one

Jest integrated with Nest's TestingModule. Unit, integration and end-to-end tests with real or substituted providers, whichever fits the case.

Delivery modes

REST, GraphQL, microservices or a hybrid under the same framework

NestJS covers four exposure modes on top of the same domain layer. We pick the mode based on your load, your client team and your technical ecosystem.

REST API with OpenAPI

Versioned contracts

Controllers with decorators, validated DTOs and Swagger generated automatically. URI or header versioning and security middlewares by default.

Fits mobile apps and SPAs

GraphQL with Apollo

Code-first schema

Typed resolvers, DataLoader against N+1 and subscriptions over WebSocket. The schema is derived from TypeScript and published as a contract to the frontend.

Fits frontends with many views

Decoupled microservices

NATS, Kafka and gRPC

Native Nest transports over NATS, Kafka, Redis or gRPC. Typed messages, event patterns and request/reply with the same module structure.

Fits event-driven platforms

Hybrid application

HTTP and messaging in one process

A single binary serves REST or GraphQL for clients and consumes queues in parallel. Same domain, same DI, two input channels into the business logic.

Fits backoffice plus async operations
TECHNOLOGIES

NestJS stack we ship to production

The stack adapts to your infrastructure and your team's maturity. We combine Prisma or TypeORM, REST with Swagger, GraphQL Apollo and async transports to deliver maintainable APIs and microservices.

Framework
NestJS 10TypeScript 5Express / Fastify adapter
Data and ORM
PrismaTypeORMMikro-ORM
APIs
REST + SwaggerGraphQL ApollogRPC
Messaging
NATSKafkaRedis pub/sub
Frequently asked questions

Technical decisions that come up before kickoff

The questions that show up in the first technical meetings with CTOs and architects when NestJS is on the table.

  • When does NestJS fit better than plain Node.js or Express?
    NestJS fits when the domain grows, several teams touch the same backend or you need clear boundaries between modules. It brings DI, layers and conventions that keep the code consistent as the product evolves.
  • Does it work well for real microservices in production?
    Yes. NestJS ships transports for NATS, Kafka, Redis, RabbitMQ and gRPC with typed event and request/reply patterns. We add observability with OpenTelemetry, versioned contracts and deployment on Kubernetes.
  • Which ORM do you pick: Prisma, TypeORM or Mikro-ORM?
    Prisma when DX, declarative migrations and strong typing come first. TypeORM when there are legacy entities or mature repositories. Mikro-ORM when the model fits Unit of Work and Identity Map.
  • How do you approach authentication, authorization and multi-tenant?
    Passport and JWT integrated as guards and strategies. Authorization with CASL or role guards at route and method level. Multi-tenant resolved by header, subdomain or claim, with data isolation at the repository layer.
  • What level of testing do you leave in the project?
    Unit tests on services with Jest and mocks via TestingModule, integration with a real database in a container and e2e tests on the HTTP app. CI blocks merges below the agreed coverage threshold.
  • Can you take over an existing NestJS codebase?
    Yes. We audit modules, dependencies, technical debt and coverage. We deliver a report with risks, prioritized refactors and an evolution plan that the in-house team can continue.

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