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English
$
USD
I will be your custom full stack web developer in react, express, sql
Devwiz
5.0
5.0
About this gig
Need a fast, secure, scalable web app or an AI-powered SaaS platform for your business?
I'm a full stack developer building modern web and AI-integrated applications with React, Next.js, Node.js, Express, PostgreSQL & MySQL. From SaaS platforms and admin dashboards to AI chatbots and REST APIs, I turn your idea into a production-ready solution.
Services
- Full-stack web & AI app development
- React/Next.js frontend (React Router, TanStack Query)
- Node.js & Express backend, REST APIs
- AI chatbot/agent integration (OpenAI, Claude)
- JWT auth & role-based access
- PostgreSQL, MySQL, MongoDB database design
- Stripe/PayPal payment integration
- Performance optimization & bug fixing
Tech Stack
React, Next.js, TypeScript, Tailwind, Node.js, Express, Fastify, NestJS, PostgreSQL, MySQL, MongoDB, Nginx, Cloudflare, Vercel
Why Choose Me?
- Scalable, secure architecture
- Clean, maintainable code
- AI integration experience
- Clear, professional communication
- Message me before ordering to discuss your project.
Message me before ordering to discuss your project.
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Devwiz
Devwiz
Web Dev , Cybersecurity expert
- FromBangladesh
- Member sinceJun 2021
- Last delivery10 months
Languages
English, Hebrew, German, French
Hello and welcome to my profile!
I’m a Full Stack Developer and AI Automation Specialist. I build modern websites, web apps, APIs, and automation workflows that are simple, reliable, and easy to use.
I work with React, JavaScript, TypeScript, Node.js, Express, MongoDB, n8n, OpenAI, Claude, and custom APIs.
I can help with:
• Web app development
• Bug fixing and debugging
• API development
• AI automation
• Code improvements and refactoring
Have a project in mind? Send me a message and let’s discuss it.
My Portfolio
FAQ
What database and backend technologies do you use?
I build backends using Node.js and Express.js, typically paired with MySQL or PostgreSQL using Sequelize ORM for secure and scalable relational data mapping. However, I can also work with MongoDB/Mongoose depending on your application's architecture requirements.
How do you handle application security and user authentication?
Security is a core priority. I implement production-grade JSON Web Token (JWT) authentication features with automated refresh token rotation and secure, HTTP-only cookies. I also follow OWASP guidelines to implement input validation and strict CSRF protection layers.
Will I get documented API endpoints and clean source code?
Absolutely! I deliver thoroughly clean, modular, and well-commented code. For the backend API layers, I can provide a comprehensive Postman collection so your endpoints are ready to test, verify, and monitor effortlessly.
Can I place an order directly, or should I message you first?
Please send me a message before placing a direct order! Full-stack applications vary greatly in terms of database design, API endpoints, and third-party integrations. Discussing your requirements first allows me to recommend the perfect package or send a custom offer tailored to your project.
Reviews
7 reviews for this Gig
| (7) | ||
| (0) | ||
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
A acejimbo
Canada
Ongoing collaborationthanks again !
$50-$100
Price
7 days
Duration
Helpful?A acejimbo
Canada
Ongoing collaboration3rd project with this guys and as always im really happy with his work ! I recommend him to everyone !
$50
Price
3 days
Duration
A 
Seller's Response
Helpful?A acejimbo
Canada
Ongoing collaboration3rd project with him.... always perfect job and communication
$50
Price
4 days
Duration
A Seller's Response
Helpful?1 person found this review helpful.A acejimbo
Canada
Ongoing collaborationThis is the best dev you can hire ! I recommend BUYERS to be alert about his local time, he will answer you whatever the time because fiverr's workers need to answer fast to the client for their stats and he wants your satisfaction. But it's way better to chat with him during his day time :) Amazing...
$100-$200
Price
7 days
Duration
A Seller's Response
Helpful?1 person found this review helpful.R rorosa11
Israel
You are the best!!
$50
Price
3 days
Duration
A Seller's Response
Helpful?1 person found this review helpful.
Reviews
7 reviews for this Gig
| (7) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
A acejimbo
Canada
Ongoing collaborationthanks again !
$50-$100
Price
7 days
Duration
Helpful?A acejimbo
Canada
Ongoing collaboration3rd project with this guys and as always im really happy with his work ! I recommend him to everyone !
$50
Price
3 days
Duration
A Seller's Response
Helpful?A acejimbo
Canada
Ongoing collaboration3rd project with him.... always perfect job and communication
$50
Price
4 days
Duration
A Seller's Response
Helpful?1 person found this review helpful.A acejimbo
Canada
Ongoing collaborationThis is the best dev you can hire ! I recommend BUYERS to be alert about his local time, he will answer you whatever the time because fiverr's workers need to answer fast to the client for their stats and he wants your satisfaction. But it's way better to chat with him during his day time :) Amazing...
$100-$200
Price
7 days
Duration
A Seller's Response
Helpful?1 person found this review helpful.R rorosa11
Israel
You are the best!!
$50
Price
3 days
Duration
A Seller's Response
Helpful?1 person found this review helpful.
