I will integrate chatgpt or claude ai into your website or app

Need a reliable backend API built fast and done right? I architect

and build REST APIs for SaaS platforms, mobile apps, and web

products using Node.js, Express, and NestJS.

As a CTO, I have shipped production APIs handling real-time data,

role-based access, payment integrations, and entity-driven

business logic all in TypeScript.

WHAT I BUILD:

- REST APIs with Express or NestJS and TypeScript

- JWT authentication and role-based access control

- PostgreSQL or MySQL with Prisma or TypeORM

- Swagger documentation for every endpoint

- Input validation, error handling and logging

- Webhook receivers and third-party integrations

- Docker-ready, deployment-friendly structure

WHAT YOU GET:

- Clean, typed, maintainable code

- Swagger docs so your frontend team can work immediately

- Deployment instructions for your environment

HOW IT WORKS:

1. You describe your data model and what the API needs to do

2. I confirm scope and deliver a structure plan

3. I build and test all endpoints

4. You review revisions included

Message me before ordering to confirm scope fits your package.