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I will build node js and nestjs rest apis with authentication and databases
M. Shahmeer
About this gig
Need a Node.js backend for your SaaS, web app or mobile app? I build REST APIs with Express or NestJS, database integration and documented endpoints.
I have 3 years of production development experience, including LMS backends, real-time sports applications and ERP integrations.
WHAT I BUILD
- Node.js REST APIs with Express or NestJS
- JWT authentication and role-based access
- Input validation, password hashing and error handling
- MongoDB or PostgreSQL database integration
- Firebase or Supabase integration
- Stripe checkout, subscriptions and verified webhooks
- Third-party API integrations
WHAT YOU RECEIVE
- Source code in your repository
- Testing of agreed endpoints and key error cases
- Setup instructions and an explanation of the implementation
- Postman collection in Standard and Premium
Swagger documentation and deployment are available as extras or in a custom offer. Hosting and third-party fees are separate.
Packages cover agreed endpoints and workflows. Complex integrations, migrations and additional features require separate scoping.
Send your requirements through Fiverr before ordering to confirm scope, price and delivery.
Get to know M. Shahmeer
M. Shahmeer
Full Stack Developer 10 Platforms Shipped 1M Users 100 Countries
- FromPakistan
- Member sinceAug 2024
- Avg. response time1 hour
- Last delivery1 year
Languages
English
I build web and mobile apps that run in production, not just in demos.
10 platforms shipped, 1M+ users combined. My LMS work alone serves 640,000+ students across 56 campuses, with 21,000 currently enrolled. My app is used in 100+ countries.
What I build:
SaaS platforms and admin dashboards
REST APIs and backend systems
CRM, ERP and internal business tools
AI-powered apps with OpenAI
E-commerce and Stripe payments
React Native apps for iOS and Android
3+ years building for founders in the US, UK, Canada and Australia. Send me your idea and I'll tell you exactly what it takes to build it.
My Portfolio
Other Software Development Services I Offer
FAQ
Do I receive the source code?
Yes. Every package includes the custom source code, dependency details and setup instructions, delivered to your repository. Third-party libraries remain subject to their licenses.
Should I use Express or NestJS?
Both run on Node.js. Express offers flexible structure. NestJS provides conventions and dependency injection that can help organize larger applications. The choice depends on your requirements and existing codebase.
Which databases do you support?
MongoDB and PostgreSQL, plus Firebase and Supabase services. Each package covers one agreed database setup. Data migration requires separate scoping.
Can you connect the API to my existing frontend?
Yes. I can build endpoints for React, Next.js or mobile clients using agreed request and response formats. Frontend code changes are included only when explicitly scoped.
What counts as an endpoint?
An endpoint is one agreed HTTP method and route, such as GET /products or POST /products. Its business logic also affects pricing. Complex workflows require review before ordering.
Is API documentation included?
Every package includes setup instructions. Standard and Premium also include a Postman collection. Swagger or OpenAPI documentation is available as an extra or through a custom offer.
Can you integrate Stripe payments?
Yes. Checkout, subscription handling and webhook processing can be scoped separately. Premium can cover one agreed payment workflow. A complete billing system requires a custom quote.
Can you integrate third-party APIs?
Yes, subject to the provider's documentation, access and limitations. Premium includes one agreed integration workflow. Multiple workflows or synchronization systems require separate scoping.
Do you deploy the backend live?
Deployment is available as an extra or in a custom offer. The hosting environment must support the application's requirements. Hosting, domain and third-party service fees are paid separately by you.
What do revisions cover?
Revisions cover adjustments to the original agreed requirements. Additional endpoints, integrations, features or changes in business logic require a separate quote.
