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I will build node js express rest API and backend
Kachy.designz
About this gig
Professional Node.js Backend Developer | NestJS | Express.js | REST API
Need a Node.js Developer? I build secure backend applications, REST APIs, NestJS, Express.js, microservices, JWT authentication, and scalable cloud-ready solutions with clean, production-ready code.
My Services
- Node.js Backend Development
- NestJS Development
- Express.js Development
- REST API Development
- Backend API Development
- Microservices Architecture
- JWT Authentication
- OAuth Authentication
- Role-Based Access Control (RBAC)
- PostgreSQL Integration
- MongoDB Integration
- MySQL Integration
- Redis Integration
- Third-Party API Integration
- Payment Gateway Integration
- Stripe & PayPal Integration
- WebSocket & Socket.IO Development
- Swagger/OpenAPI Documentation
- Database Design & Optimization
- Existing Project Enhancement
- Bug Fixing & Code Refactoring
- Performance Optimization
- Docker Support
- AWS
Applications I Build
- Business Applications
- SaaS Platforms
- CRM Systems
- ERP Systems
- E-Commerce Backends
- Marketplace Platforms
- Booking & Reservation Systems
- Learning Management Systems
- Real-Time Applications
- Admin Dashboard Backends
Technologies
- Node.js
- NestJS
- Express.js
- JavaScript
- TypeScript
- REST API
Get to know Kachy.designz
Kachy.designz
I transform innovative ideas into production ready AI application
- FromUnited Arab Emirates
- Member sinceOct 2023
Languages
Urdu, English
Hello! I'm a Full-Stack Software Engineer and AI Developer with extensive experience in building AI-powered web applications, mobile apps, business automation solutions, enterprise software, and scalable backend systems.
My Core Expertise of AI Development:
-AI Agents
-AI Chatbots
-RAG
-AI SaaS Applications
-AI Websites
-AI Mobile Applications
-n8n Automation
-Workflow Automation
-AI Business Automation
-Knowledge Base AI Assistants
-OpenAI, Claude, Gemini & Llama Integration
Backend Development:
-Java Spring Boot
-Python Django
-Python Flask
-Node.js Express
-NestJS
-ASP.NET Core (C#)
My Portfolio
FAQ
Do you develop Node.js REST APIs?
Yes. I build secure, scalable REST APIs using Node.js, NestJS, and Express.js with JWT authentication, Swagger documentation, database integration, and production-ready architecture.
Do you develop NestJS backend applications?
Yes. I specialize in NestJS backend development, including REST APIs, GraphQL APIs, authentication, microservices, PostgreSQL, MongoDB, MySQL, and third-party integrations.
Do you work with Express.js projects?
Yes. I develop and maintain Express.js applications, create REST APIs, optimize backend performance, integrate databases, and fix bugs in existing Node.js projects.
Can you build Microservices using Node.js?
Yes. I build scalable microservices using NestJS and Node.js with secure communication, modular architecture, Docker support, Redis, and API gateways.
Which databases do you support?
I work with PostgreSQL, MongoDB, MySQL, MariaDB, SQL Server, and Redis. I design optimized database schemas and improve query performance for Node.js applications.
Can you integrate third-party APIs?
Yes. I integrate Stripe, PayPal, Twilio, Firebase, Google APIs, OpenAI, WhatsApp, SMS gateways, email services, payment gateways, and many other third-party APIs.
Do you provide bug fixing for Node.js projects?
Yes. I troubleshoot Node.js, NestJS, and Express.js applications, resolve backend bugs, optimize APIs, improve database performance, and refactor legacy code.
Can you deploy Node.js applications?
Yes. I deploy Node.js applications to AWS, DigitalOcean, VPS, Docker, Ubuntu servers, Nginx, PM2, and cloud hosting providers with SSL and production configuration.
Do you implement authentication and authorization?
Yes. I implement JWT authentication, OAuth2, RBAC, refresh tokens, secure login systems, user management, and API security best practices.
What types of backend applications do you develop?
I develop SaaS platforms, CRM, ERP, booking systems, marketplaces, e-commerce backends, healthcare systems, LMS platforms, enterprise software, and custom Node.js applications.
