TypeScript-first, OpenAPI-documented, structured, testable. NestJS is the backend choice that scales beyond MVP, with typed contracts and testable services by construction.
Where it fits in our builds
In a typical build, NestJS sits between the Next.js app and Postgres. It owns the API contract, the background queues, and the auth boundary, and it is where LLM calls get routed, retried, and logged.
TypeScript
Node.js
Next.js
Supabase
Docker
AWS
We pick NestJS because it gives us TypeScript-first DX out of the box and structure that scales beyond the chaos of vanilla Express. Its decorator-based clarity (controllers, services, modules) maps cleanly to team ownership, and its testing primitives mean every service is mockable and every controller is testable. The ecosystem is deep too: Prisma, GraphQL, microservices, and WebSockets are all first-class, so the framework grows with the product instead of getting in its way.
REST endpoints with OpenAPI spec generation: fully typed DTOs and contracts your frontend can trust.
Code-first GraphQL schemas with type-safe resolvers, generated from your domain models.
BullMQ integration for retries, scheduling, and priority queues. Anything that should not block a request.
Real-time gateways for live updates, streaming responses, and bidirectional events.
NestJS Microservices module for service decomposition, when the architecture genuinely justifies it.
LLM call routing, streaming, and retries: the production plumbing behind AI product features.
Calling NestJS “the spine” is only meaningful because of the order things run in: authorisation and validation happen before your handler, not inside it.
Ad platforms, outbound engines, AEO tools, and content engines.
Underwriting, risk, fraud, and document-intelligence pipelines.
Clinical assistants, triage, and medical-document workflows.
A custom checkout and payment platform for Shopify merchants: gateway integration, Apple Pay and Google Pay, multi-store installs, disputes and settlement reporting.
9 stalled pull requests and a 3-week bug backlog cleared; 3 held features then shipped.
A Shopify app that inverts order entry for live sellers: scan the product, and the draft order builds itself.
30+ SKUs scanned into one Shopify draft order; the old version choked on large ones.
A 60-second skin scan on a pharmacy shelf that resolves into one of more than a thousand personalised formulas, handed to the customer the same visit.
1,000+ skincare formulas resolved from a 60-second phone scan in 55+ San Pablo pharmacies, before the customer leaves the store.
A senior team that owns backend workstreams alongside yours, writing structured, testable, TypeScript-first APIs from day one.
We pick tools because they ship, not because they trend. Every technology we list is one we have deployed to production, debugged under load, and would choose again for the right problem.
Straight answers on how we approach NestJS, from ORMs to queues.
Structure, testability, and TypeScript-first DX. Express works for small APIs; NestJS scales as the product grows.
No account managers. No discovery theatre. A direct conversation about your backend and what it takes to ship it to production.