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Fiverr Pro
English
$
USD
I will develop secure rest API with node js, express, mongodb and postgresql
Md Mamun
About this gig
Need a professional REST API for your web or mobile application?
I'm a Backend Developer specializing in Node.js API development with 3+ years of experience building secure, scalable APIs!
WHAT I OFFER:
RESTful API Development (Node.js + Express)
Database Integration (MongoDB/PostgreSQL)
JWT Authentication & Authorization
Role-based Access Control (RBAC)
Third-party API Integration (Stripe, PayPal, etc.)
File Upload & Management
Email & SMS Integration
Input Validation & Error Handling
API Documentation (Swagger/Postman)
Deployment & Testing
TECH STACK:
- Backend: Node.js, Express.js
- Database: MongoDB, PostgreSQL, Prisma
- Auth: JWT, OAuth 2.0, Passport.js
- Validation: Joi, express-validator
- Security: Helmet, rate limiting, CORS
- Testing: Jest, Supertest
WHY CHOOSE ME?
️ Clean, scalable code
️ Security best practices
️ Complete API documentation
️ Postman collection included
️ Fast delivery
️ Post-delivery support
PERFECT FOR:
- Mobile app backends
- Microservices architecture
- Integration projects
- MVP development
Questions? Message me first!
Let's build your API!
Respect third-party rights
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Get to know Md Mamun
Md Mamun
Software Engineer at OctopusX
- FromBangladesh
- Member sinceOct 2022
Languages
Bengali, English, French, Hindi
I'm a dedicated Software Engineer with over a 2.5 year of experience in backend development, system design, and full-stack engineering. I recently served as the Acting CTO at OctopusX, where I led development for scalable systems and helped ship impactful digital products.
Throughout my journey, I’ve:
Built and deployed SaaS platforms from scratch
Delivered two large-scale production projects
Created 20+ tools
Mentored team members and improved engineering workflows
My Portfolio
FAQ
What information do you need to start?
API requirements (endpoints needed, data models, authentication type), database preference, and any third-party services to integrate.
Do you provide API documentation?
Yes! All packages include detailed documentation. Standard and Premium include Swagger/OpenAPI documentation with interactive testing interface.
Can you integrate third-party APIs?
Absolutely! I have experience integrating payment gateways (Stripe, PayPal), email services (SendGrid, Mailgun), SMS (Twilio), social auth, and many others.
What about API security?
Security is my priority! I implement JWT authentication, input validation, SQL injection prevention, XSS protection, rate limiting, CORS configuration, and follow OWASP best practices.
Do you provide deployment?
Yes! I can deploy on AWS, DigitalOcean, Heroku, Render, or any platform you prefer. Deployment guides included in all packages.
Can you work with existing databases?
Yes! I can connect to your existing database or migrate data from other systems.
What if I need changes after delivery?
All packages include revisions and support period. After that, you can order gig extras or contact me for ongoing maintenance.
