Node.js Backend Development Services

Express has the largest middleware ecosystem and almost no learning curve — it's the safe default for most projects. Fastify runs 2-3x faster, which matters for high-throughput APIs where every millisecond counts. NestJS brings opinionated structure — dependency injection, modules, decorators — and it's the right call for large teams managing dozens of services where consistency matters more than raw speed.

We use Prisma Migrate for schema versioning. The workflow is strict: generate migrations in development, review them in pull requests, test in staging, apply to production during deployment. Destructive changes follow a multi-step process — add the new column, backfill the data, update the application code, then drop the old column. Nothing goes down.

Structured JSON logging with request correlation IDs, distributed tracing across services via OpenTelemetry, custom business metrics like signup rates and payment success, health check endpoints, and alerting rules. Grafana or Datadog dashboards give you request latency, error rates, and queue depths at a glance. You stop finding out about problems from customers.

Yes. We build against an OpenAPI spec your frontend team can use from day one. TypeScript client SDKs get generated from that spec, so your React or Next.js frontend gets type-safe API calls without anyone typing them by hand. CORS, authentication tokens, WebSocket connections — all handled.

We use BullMQ backed by Redis. Every queue gets retry logic with exponential backoff, dead letter queues for failed jobs, priority scheduling, concurrency limits, and a monitoring dashboard. Jobs survive server restarts. You can inspect, retry, or cancel them through the admin UI — no digging through logs to figure out what happened.

REST is request-response: the client asks, the server answers, the connection closes. WebSockets keep that connection open so the server can push data the moment something changes — which is what you need for live dashboards, chat, notifications, and collaborative editing. Most apps use both: REST for standard CRUD operations, WebSockets for realtime updates, sharing the same authentication and business logic underneath.