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Fiverr Pro
English
$
USD
I will build high converting web app using ai next js react js and full stack tech
Sonjoy Barman
Top Rated
4.8
4.8
About this gig
Are you tired of developers who build a UI but can't make it actually work fast, scalable, and user-ready?
I'm Sonjoy, a senior full-stack developer with 5+ years of experience and 250+ delivered projects for clients in the USA, UK, Europe, and Asia. Top Rated Seller on Fiverr. 4.9 rating.
What I build for you:
- AI-powered web apps (ChatGPT / Gemini integration)
- SaaS dashboards with real-time analytics
- Next.js + React frontend (Lighthouse score 95+)
- Full-stack MERN applications
- E-commerce platforms with payment gateway
- Figma to Next.js pixel-perfect conversion
- REST API & third-party API integration
- Mobile-responsive and SEO-optimized
Why clients choose me over others:
- 98% client satisfaction rate
- Clean, commented, production-ready code
- 3050% performance improvement on existing apps
- Fast response (avg. 1 hour)
- Post-delivery support included
Not sure which package fits your project?
Send me a message. I'll recommend the best option for FREE.
Slots are limited. Message me before they fill up.
How it works
Here are the steps to complete your Basic package project:
- 1
Requirements We make sure I have everything I need to complete your project successfully.
- 2
Design concept I'll design a concept for your website, which we can then develop together.
- 3
Progress check We'll meet to review the status of the project and the steps required to complete it.
- 4
Final design I'll deliver the final design of your website for your approval.
- 5
Development I'll develop a fully operative website for you.
- 6
Final Review I'll deliver the final version of the website for your review.
Get to know Sonjoy Barman
Sonjoy Barman
I will build Full stack application with Next js, Astro js, and AI integration
Top Rated
- FromBangladesh
- Member sinceOct 2020
- Avg. response time1 hour
- Last deliveryabout 11 hours
Languages
English, French, German, Spanish
Senior Full-Stack Developer with 6+ years experience with Next.js, React, TypeScript, Astro.js, Node.js, Python, FastAPI & MongoDB. I am a Fiverr Top Rated Seller with 250+ projects completed for clients in 15+ countries with a 98% satisfaction rate. I develop scalable SaaS platforms, e-commerce systems and AI-powered tools with Google Gemini AI, OpenAI and LangChain. Experience with AWS, Docker, CI/CD and React Native for mobile applications. I concentrate on clean code, SEO-friendly architecture and quick delivery.
Let’s create something great!
My Portfolio
Other Software Development Services I Offer
FAQ
Can i see more samples of your work?
Yes. I can share my recent live projects and portfolio in the inbox. Just send me a message.
Do you provide responsive design?
Yes. Your website will be fully responsive and work smoothly on mobile, tablet, and desktop.
Will my website be SEO friendly?
Yes. I follow basic SEO structure like clean code, fast loading, and proper tags.
What do you need to start the project?
1. Project details / idea 2. Content (text, images) 3. Reference website (if any)
Do you provide backend development?
Yes. I work with Node.js, MongoDB and build full-stack applications based on your needs.
Can you redesign my existing website?
Yes. I can redesign, fix issues, and improve performance of your current website.
How many revisions do you offer?
I provide revisions until you are satisfied (depending on package).
Do you provide support after delivery?
Yes. I provide limited free support after delivery for bug fixes.
How long will it take?
Depends on project complexity. Small projects: 2–5 days, large projects: discuss in inbox.
Reviews
132 reviews for this Gig
| (129) | ||
| (3) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
W walid119
Repeat Client
Germany
It was a great experience. Fast communication, professional work, and the final result was exactly what I needed. Highly recommended!
$400-$600
Price
4 weeks
Duration
Helpful?A angelaamddcouk
Repeat Client
United Kingdom
good communicator, pleasure working with you. thank you.
$100-$200
Price
4 days
Duration
Helpful?V victor_pasos
Mexico
Thank you!
$100-$200
Price
1 day
Duration
Helpful?N nickf68
France
Sonjoy is a polite and hard working front end developer who is a good communicator and fast to respond.
$600-$800
Price
21 hours
Duration
Hourly rate
Order type
Helpful?A anita_thomas995
United States
What a wonderful seller! I only told Sonjoy that my add product feature wasn’t working. He went through my entire codebase carefully, identified the issue on his own, and fixed it without asking unnecessary questions. After fixing it, he even sent me a clear video explaining how the feature works —...
Up to $50
Price
3 days
Duration
Helpful?
Reviews
132 reviews for this Gig
| (129) | ||
| (3) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
W walid119
Repeat Client
Germany
It was a great experience. Fast communication, professional work, and the final result was exactly what I needed. Highly recommended!
$400-$600
Price
4 weeks
Duration
Helpful?A angelaamddcouk
Repeat Client
United Kingdom
good communicator, pleasure working with you. thank you.
$100-$200
Price
4 days
Duration
Helpful?V victor_pasos
Mexico
Thank you!
$100-$200
Price
1 day
Duration
Helpful?N nickf68
France
Sonjoy is a polite and hard working front end developer who is a good communicator and fast to respond.
$600-$800
Price
21 hours
Duration
Hourly rate
Order type
Helpful?A anita_thomas995
United States
What a wonderful seller! I only told Sonjoy that my add product feature wasn’t working. He went through my entire codebase carefully, identified the issue on his own, and fixed it without asking unnecessary questions. After fixing it, he even sent me a clear video explaining how the feature works —...
Up to $50
Price
3 days
Duration
Helpful?
