NestJS Development
2muchcoffee is a NestJS development company. We build structured, typed Node.js backends: modules, dependency injection, and GraphQL or REST APIs that stay maintainable as a team and a codebase grow, not an Express app that turns to spaghetti at scale. Stepler, Sweden's number one fitness app with 10M+ downloads, runs on our Node.js and NestJS backend today. Building software since 2015, rated 5.0 on Clutch across 26 reviews. Senior engineers, dedicated to your product or embedded in your team.
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Why teams pick us for NestJS
Senior engineers, not juniors
The people who scope your build are the people who ship it. More than eleven years shipping software, and a 5.0 rating on Clutch across 26 reviews.
Structure that survives a growing team
Modules and dependency injection, decided before the first endpoint, so the codebase stays navigable once it is not just the two of us who know it.
Read the work before you hire us
Stepler's production NestJS backend runs at 10M+ downloads today, and our NestJS engineering standards are published in full. Evidence, not adjectives.
Capabilities
What we build with NestJS
NestJS is the framework we reach for once a Node.js backend needs to survive more than one developer and more than one release.
Production APIs, REST and GraphQL
Modular, typed backends with dependency injection, so the codebase stays organized as endpoints, teams, and traffic grow. Stepler runs its production API this way today, at 10M+ downloads.
Real-time and event-driven backends
WebSocket gateways and message-queue consumers built on the same module structure as the rest of the app, not a separate script bolted on the side.
Microservice and monolith architectures
NestJS scales down to a single well-structured monolith and up to a microservice architecture over gRPC or a message broker, chosen by what your team and traffic actually need, not by default.
Express-to-NestJS rebuilds
Legacy Express backends restructured into NestJS's module and dependency-injection pattern, incrementally, so the API keeps serving traffic while the architecture underneath it changes.
Backend for AI and agent systems
NestJS as the typed API layer in front of retrieval, agent, and model-serving work, with the AI logic behind a clean module boundary instead of mixed into route handlers.
The stack
The NestJS stack we work in
From the module and provider layer down to the database and deployment.
How we build
Structure decided before the first endpoint
The most common NestJS mistake is treating it like Express with extra steps: one giant module, business logic sitting in controllers, no clear boundary between features. We decide the module and dependency structure first, so the codebase stays navigable once it is not just the two of us who know it.
Feature modules follow the actual boundaries in your domain, not a folder-per-file convention that stops meaning anything past a dozen endpoints.
Controllers stay thin. Services hold the logic, so it is testable in isolation and reusable across REST, GraphQL, or a background job without copy-paste.
Providers and interfaces are structured so a database, queue, or third-party API can be swapped or mocked without touching the code that depends on it.
DTOs and validation pipes catch a malformed request before it reaches your business logic, and the same types travel from the database through to the API response.
Migration
Express to NestJS migration
Moving a growing Express API to NestJS does not have to mean freezing feature work for a quarter. We migrate incrementally and keep the API serving traffic the whole way.
Module by module
We wrap the existing Express app and migrate one feature module at a time, so the API keeps responding while the architecture underneath it changes.
Structure first, rewrite second
Routes get grouped into real feature modules and business logic gets pulled out of handlers into services before anything is rewritten line by line.
Types added where they pay off
Request and response shapes get typed and validated first, since that is where an untyped Express API produces the most runtime bugs.
A plan before anything moves
You get a module-by-module migration order and a plan up front, not a surprise mid-flight. We migrate at the pace your roadmap can absorb.
Engagement models
Work with us how you need
Pick the model that fits your stage. You can change it as your roadmap changes.
Dedicated developer
One senior engineer, full-time on your NestJS backend and managed by you. Best for an ongoing roadmap.
Dedicated team
A cross-functional pod of engineers, design, and QA, ready to ship a NestJS-backed product end to end without growing headcount.
Project-based
A scoped build or an Express-to-NestJS migration, delivered end to end against a fixed plan, price, and timeline.
Compare
NestJS vs Express vs Fastify
All three run on Node.js. They differ in how much structure you get out of the box versus how much you assemble yourself.
Have a NestJS build or migration in mind?
Proof
Read the work, not just the pitch
Sweden's number one fitness app, across 12 markets, on a React Native front end and a Node.js/NestJS/GraphQL/MongoDB backend we built and run.
11 engineering standards we ship NestJS backends by, published in full, plus a drop-in kit for Claude Code, Cursor, and Codex. Read how we actually work, not a marketing description of it.
Questions
NestJS, answered
Is NestJS better than Express?
NestJS is built on top of Express (or Fastify) by default, not a replacement for it. Express gives you minimal structure and you assemble the rest yourself. NestJS provides modules, dependency injection, and TypeScript-first conventions out of the box, which is why it holds up better once a codebase and a team both grow. For a small service with one or two routes, plain Express is often enough.
Do you build GraphQL APIs with NestJS?
Yes, it is one of our most common uses of it. Stepler's production API is Node.js, NestJS, and GraphQL together, serving 10M+ downloads across 12 markets.
Can you migrate our Express app to NestJS?
Yes, usually incrementally, module by module, so the API keeps serving traffic throughout rather than freezing feature work for a rewrite. You get a migration order and a plan before anything changes.
How do you engage, and how fast can you start?
Three ways: one dedicated senior engineer, a cross-functional pod, or a scoped fixed-plan project. We scope the work on a short call and start once the plan is agreed, so you are not waiting weeks to begin.
How much does NestJS development cost?
It depends on scope and engagement model, so we do not quote a flat number up front. A dedicated engineer is a monthly rate, a scoped project is a fixed price against a plan. Tell us what you are building and we come back with an estimate before any work starts.
Who owns the code and the IP?
You do, from day one. You get the repository, the infrastructure, and full ownership of the code, whether we embed in your team or deliver a fixed-scope project.
What database do you use with NestJS?
Whatever fits the product, most often PostgreSQL or MongoDB behind TypeORM or Prisma. Stepler runs on MongoDB; a relational data model usually points us to PostgreSQL instead.
Building or restructuring a NestJS backend?
Tell us what you're building and we'll tell you honestly how we would structure it.
Talk to our team→Tell us about your NestJS project
Our team contacts you within 24 business hours
We collect all the key requirements from you
The team of developers prepares estimation
We can sign NDA since we respect the confidentiality of our clients