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English
$
USD
I will be your expert backend developer with node js and api integrations
Yasin
5.0
5.0
About this gig
PLEASE CONTACT ME BEFORE ORDERING!
Need a secure REST API, reliable backend, or help fixing server/API issues? As a Node.js expert Backend Developer, I build scalable backends and integrations designed for speed, security, and real-world use.
SERVICES:
- Custom REST APIs with Node.js, Express.js & NestJS
- API integration for React/Next.js & third-party services
- Fix CORS, JWT, Auth, JSON, 500 errors, broken endpoints & more
- Stripe, PayPal, Firebase, Twilio, Google Maps & OpenAI
- JWT, OAuth2, Bcrypt, RBAC & secure middleware
- Webhooks, Socket.io & real-time data
- MongoDB, PostgreSQL & MySQL database optimization
DATABASE OPTIMIZATION:
I review slow queries, indexes, schemas, relationships, and connection handling, then optimize queries and database structure to improve response time, scalability, and database efficiency.
TECH STACK:
Node.js, Express.js, NestJS, TypeScript, MongoDB, PostgreSQL, MySQL, Prisma, REST APIs, Postman
WHY ME?
- Clean, modular & documented code
- Secure handling of API keys and data
- API documentation
- Performance-focused development
Message me before ordering so I can review your requirements and recommend the right solution.
Get to know Yasin
Yasin
Full Stack Web Developer, MERN, Next js Specialist
- FromBangladesh
- Member sinceFeb 2020
- Last delivery7 months
Languages
Bengali, English, Hindi
Hi! I’m a Full-Stack Developer with a proven track record of crafting top-tier web solutions using React.js, Next.js, and the MERN stack. I’ve successfully built and launched scalable platforms that cut load times, optimize UX, and significantly increase client conversions.
My mission isn't just writing code—it's driving measurable business results. I help you solve technical challenges, streamline operations, and build web apps your users will love. Let’s collaborate and take your digital product to the next level today!
My Portfolio
Other Software Development Services I Offer
FAQ
Can you connect the backend API with my React or Next.js app?
Absolutely. I can handle both the backend endpoint creation and the frontend integration using Axios or Fetch API.
Do you provide API documentation for frontend developers?
Yes! Every API project includes a free Postman Collection with organized endpoints, sample request bodies, and headers for easy testing.
What do you need to get started?
A detailed description of your project requirements, API documentation (if integrating third-party services), and server/database access if applicable.
How do you ensure my API and data remain secure?
I use secure practices such as JWT/OAuth2, role-based access, Bcrypt hashing, input validation, secure environment variables, and protected API keys. Sensitive credentials are never hardcoded or exposed in source code.
Reviews
1 reviews for this Gig
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nayemurrahman3
United Arab Emirates
Great experience working with Yasin. He understood my requirements clearly, communicated well, and delivered exactly what I needed. Very professional, reliable, and easy to work with throughout the entire project. Highly recommended.
$50
Price
2 days
Duration
Y 
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Helpful?
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
N nayemurrahman3
United Arab Emirates
Great experience working with Yasin. He understood my requirements clearly, communicated well, and delivered exactly what I needed. Very professional, reliable, and easy to work with throughout the entire project. Highly recommended.
$50
Price
2 days
Duration
Y Seller's Response
Helpful?
