06
02
What is nestjs and why use it for backend development?
NestJS is a TypeScript-first Node.js framework with an architecture inspired by Angular - modules, decorators, and dependency injection built in from the start. It gives backend teams a structured, opinionated foundation instead of assembling one from scratch on top of a minimal framework like Express.
NestJS has grown to roughly 76,000 GitHub stars and clears over 13 million weekly npm downloads for its core package, with Enlyft tracking 42,269 companies now running it in production.
At Dev and Deliver, we build NestJS APIs with Prisma or TypeORM for SQL databases, Mongoose for MongoDB, and native support for GraphQL, WebSockets, and microservices when a project needs to scale past a single service. That structure is what powers backends like Speeki's - migrated from a Java and PHP monolith to Node.js microservices, now serving 100+ enterprise clients under continuous ISO audit.
Whether you're starting a new product or replacing an ageing backend, NestJS gives your team a codebase that stays testable and maintainable as it grows - not just fast to write on day one.
The benefits of choosing NestJS for your project
NestJS fits both simple and highly complex projects alike.
- Testability: built-in dependency injection and a modular architecture make unit and integration tests straightforward, keeping the codebase reliable as it grows.
- Modularity: reusable modules keep large-scale applications organised instead of turning into a single tangled codebase.
- Comprehensive documentation and community support: extensive docs and a large ecosystem of packages help the team move fast and avoid reinventing solved problems.
- Versatile and flexible: NestJS supports SQL and NoSQL databases through Prisma, TypeORM and Mongoose, plus native GraphQL, WebSockets, and microservices support.
- TypeScript integration: strong typing, better tooling, and cleaner error handling come built in, not bolted on.
From a simple REST API to a complex, enterprise-level system, NestJS adapts to the scope of the project rather than the other way around.
Looking for NestJS developers? Let's talk about your backend
From a single API to a full microservices architecture, our NestJS team can jump in at any stage - planning, migration, or ongoing support.
03
Full-scope NestJS development services
Module & Architecture Design
We design modular NestJS applications from the ground up - clear module boundaries, dependency injection, and decorators used the way the framework intends, not bolted on after the fact.
Database Integration with Prisma, TypeORM & Mongoose
We connect NestJS to SQL databases via Prisma or TypeORM, or to MongoDB via Mongoose, choosing the right tool for your data model rather than forcing one default everywhere.
REST & GraphQL API Development
We build REST controllers and, where a project needs it, GraphQL resolvers through NestJS's native GraphQL module - so your API shape follows what your clients actually need.
TypeScript-First Development
Every layer of the application is strongly typed, from database models to controllers, cutting down on runtime errors and making the codebase easier to onboard new engineers into.
Microservices & Scalable Architecture
We use NestJS's native microservices support (TCP, Redis, RabbitMQ, Kafka transporters) to split a growing system into independently deployable services - the same approach behind Speeki's migration to a Node.js microservices backend now serving 100+ enterprise clients.
Testing & Quality Assurance
Dependency injection and a modular architecture make unit and integration testing straightforward. We build test suites with Jest that isolate services and controllers without complex mocking setups.
Authentication & Authorization
We implement guards, interceptors, and strategies (Passport, JWT) to secure your API, with role-based access control designed around how your product actually needs to restrict data.
Ongoing Support & Migration
We migrate existing Node.js or Express backends to NestJS incrementally, and maintain and extend NestJS systems already in production without disrupting how your team ships.
Where and how we put NestJS to work in production - from Speeki's migration to a Node.js microservices backend now serving 100+ enterprise clients, to Hemfrid's customer and employee apps for Sweden's largest home-services company - the pattern is consistent: NestJS gives teams structure, type safety, and one team accountable for the full stack. It's not an experiment. It's how we build by default.
04
Why choose Dev and Deliver as your NestJS development partner
Straight talk on architecture
We build long-term relationships, not one-off projects. You get transparency, honest technical advice, and a team that will tell you when a modular monolith is a better fit than microservices for your stage.
One team owns the whole module
Our NestJS expertise spans the full chain - from module and database design on the backend to React and Next.js frontends. No handoffs, no gaps, no integration surprises.
Shipped through real migrations
Our engineers have shipped NestJS in enterprise compliance platforms and fast-moving product migrations, including Speeki and Eatzon. That range shows up in every architecture decision.
Testable by design
Type-safe code end to end, automated tests on services and controllers, and dependency-injection-friendly test setups are part of how we ship, not features we add later when something breaks.
05
How our NestJS team is built and managed
NestJS projects get a team built around the backend's real shape: a backend engineer designing modules, database schema, and API contracts, a frontend engineer when a React or Next.js client is part of the picture, a QA engineer covering functionality end to end, and a project manager holding it all together.
Delivery runs in Agile sprints with clear communication and regular check-ins, so your backend keeps evolving without disrupting what's already in production.
Get started with NestJS - build your backend with a team that knows the full stack
Ready to build or modernise your backend? Whether you're starting a new API, adding microservices to an existing system, or migrating away from a legacy stack like Speeki did, we'll help you design a NestJS architecture that's type-safe, modular, and built to last.
Want to light up your ideas with us?
Kickstart your new project with us in just 1 step!
Prefer to call or write a traditional e-mail?