Node.js back ends built to handle load and stay readable

• REST APIs

  Express or Nest.js APIs with predictable endpoints and proper error handling. See our API development services.

• Real-time features

  Live updates, notifications and messaging with Socket.IO.

• Background jobs

  Queued work with BullMQ for emails, file generation and data syncing, so users are not left waiting.

• Database integration

  Prisma, TypeORM or Mongoose on PostgreSQL, MySQL or MongoDB.

• Login and security

  Token-based auth, role-based access and input validation on every endpoint.

• Refactoring

  Making a codebase that works but scares everyone safe to change, without a full rewrite.

• Many users connected at once. Each doing a little work, like chat, dashboards or booking systems.
• Real-time behavior. Live dashboards, notifications and collaboration.
• A JavaScript front end. One language across the stack means shared types and shared validation.
• Lots of calls to other APIs. Work that mostly waits on other services is where Node.js shines.

Node.js is not the answer for heavy number crunching. When another tool fits better, we will say so.

Node.js with Express or Nest.js, strict TypeScript, PostgreSQL, MySQL and MongoDB, Prisma, TypeORM and Mongoose, Redis for caching and sessions, BullMQ for queues, Socket.IO for real time and Docker for deployment. We pick Nest.js for larger applications and Express for smaller services.

1. Define the surfaceEndpoints, data shapes, authentication and errors agreed before coding.
2. Model the dataSchema and relationships first, because most performance problems are database problems.
3. Build in cyclesShort cycles with tests written alongside the code.
4. Load testWe check how it behaves with many users at once before launch, not after.
5. Deploy and documentContainerized deployment, monitoring and documentation for every endpoint.

• Readable code. Structure, types and naming a new developer can follow.
• TypeScript throughout. Strict typing catches a whole class of bugs before they reach production.
• Load tested before launch. Behavior under real concurrent traffic is checked up front.
• You talk to the engineers. A small team, working with you directly.