Scalable & Secure Backend Development with Node.js/NestJS/MySQL

M J

Starting at

/hr

About this service

Summary

I specialize in building scalable, secure, and high-performance backend systems using Node.js and NestJS. Whether it’s a REST API, microservices, or real-time system, I deliver production-grade code with clean architecture, optimized database design, and best DevOps practices.

Process

1. Project Discovery

Understand the functional and non-functional requirements, data flow, and system expectations via chat or call.

2. Tech Stack & Architecture Planning

Define backend layers, choose database (SQL/NoSQL), caching, and security structure. Break down services if needed.

3. Database Design

Design schemas and relationships. Set up models with validation, indexing, and constraints.

4. API Development

Develop RESTful or GraphQL APIs with clear controller-service-repository structure in NestJS.

5. Authentication & Authorization

Implement secure login (JWT, OAuth2) with role-based access control and user permission layers.

6. Integration & Middleware

Integrate third-party APIs, logging systems, queues (Kafka/RabbitMQ), and any business-critical services.

7. Testing & QA

Run unit/integration tests, linting, and load testing. Fix bugs and optimize for scale.

8. Deployment & Handover

Package the project for deployment. Provide CI setup (if required), config files, and full documentation for dev handoff.

FAQs

What type of projects can you build with this backend?
I can develop systems for SaaS apps, marketplaces, real-time tools, dashboards, CRMs, and more.
Can you integrate with my existing frontend or mobile app?
Yes, I can build APIs tailored to your frontend stack—React, Vue, Angular, or mobile apps using React Native or Flutter.
Will you provide documentation?
Yes, you’ll get Swagger/OpenAPI or Postman documentation along with a README guide for running and maintaining the backend.
Is your code production-ready?
Absolutely. My code is modular, testable, and built with industry best practices—ready to scale and deploy.
Can I request a microservice-based setup?
Yes. I can break your backend into smaller services with individual deployments and shared communication layers.
What database do you recommend—MongoDB or PostgreSQL?
Depends on your use case. I’ll guide you on the best choice based on relational needs, scalability, and flexibility.
Do you offer DevOps or deployment help?
Yes, I offer full setup for AWS, GCP, Azure, Docker, or even CI/CD pipelines with GitHub Actions or GitLab CI.
Do you write test cases?
Yes, I use Jest and Supertest to write automated tests for critical backend flows and endpoints.
Can I request future updates or feature additions?
Of course! I offer ongoing support, bug fixes, and new feature development as part of retainer or hourly packages.
Do you handle payment gateways or real-time systems?
Yes. I’ve integrated Stripe, PayPal, and have built real-time features using WebSockets and Redis-based pub/sub.

What's included

Modular, Scalable Codebase
Backend developed using clean architecture principles with NestJS, organized for easy maintenance and extensibility.
REST or GraphQL API Endpoints
Well-structured endpoints following REST or GraphQL conventions, fully documented and ready for frontend integration.
Secure Authentication System
JWT, OAuth2, or API key-based login and role-based access control tailored to your app’s security needs.
Database Schema Design & Integration
Optimized schema design for MongoDB or PostgreSQL, including indexing, relations, and data validation.
Third-party Integrations
Connection with external services like Stripe, SendGrid, Firebase, or custom internal APIs.
Real-Time Features
WebSocket or event-driven architecture for real-time notifications, messaging, or tracking modules.
Deployment-Ready Backend
Ready for deployment on AWS, GCP, Azure, or Dockerized with production config, environment variables, and logging.
API Documentation
Auto-generated Swagger or Postman docs for your team or public use—easy to read, test, and share.
Testing Suite
Unit and integration tests using Jest or Supertest to ensure backend reliability and CI compatibility.
Developer Documentation
Guides for setup, running, and deploying the backend. Includes architecture overview and environment setup.