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English
$
USD
I will fix bugs in next js react website and optimize performance with ai debugging
Sonjoy Barman
Top Rated
3.7
3.7
About this gig
Is your website broken, slow, or full of bugs affecting your users and conversions?
Even small bugs can break functionality, reduce performance, and hurt your business.
I help you fix issues quickly and improve your application stability.
I will fix bugs in your Next.js, React, or JavaScript website using AI-assisted debugging and performance optimization techniques.
What you will get
- Fix JavaScript / React / Next.js bugs
- AI-assisted debugging (faster issue detection)
- Performance optimization
- Error fixing (console, API, UI issues)
- Clean and maintainable code
- Responsive fixes
- Debugging complex issues
Why this works:
- Faster debugging = less downtime
- Clean code = fewer future bugs
- Optimized performance = better user experience
Most developers fix symptoms.
I fix root causes.
Get to know Sonjoy Barman
Sonjoy Barman
Senior Full Stack and SaaS Engineer Next js Node js and AI Systems
Top Rated
- FromBangladesh
- Member sinceOct 2020
- Avg. response time1 hour
- Last delivery1 month
Languages
English, French, German, Spanish
I'm Sonjoy, a top-rated full-stack developer. I build AI SaaS MVPs, RAG chatbots, and Next.js apps with auth, dashboards, clean APIs, and a live deploy.
I work with Next.js, React, TypeScript, and Node, plus OpenAI or Gemini when the product needs AI. 6+ years of experience, 250+ projects, and a 4.9 rating on Fiverr.
Best for founders who need a real v1, not a landing page. Send your idea and must-have features; I'll tell you honestly what fits and keep the scope clear.
I’ll keep the scope honest.
My Portfolio
Other Software Development Services I Offer
FAQ
What type of bugs do you fix?
JavaScript, React, Next.js, API, UI, and performance issues.
Do you fix complex errors?
Yes, including production-level issues.
What is AI debugging?
I use AI-assisted tools to identify issues faster and improve accuracy.
Do you need access?
Yes, GitHub or hosting access may be required.
Reviews
4 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (1) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
Most relevant
O oktrying
United States
Ongoing collaborationThere was a glitch with the design on the expiration box on the last page of the design. Seller told me it was a cache stored in phones browser. I trusted him and gave him the benefit of doubt but after delivery I discovered it was an error in the code. When I tried to contact seller, he made himself unavailable to contact and disappeared.
$50
Price
4 months
Duration
S 
Seller's Response
Helpful?N 
newsaga
United States
Thank you sir!
$50
Price
Helpful?Y yakoshi2022
United Kingdom
Ongoing collaborationGreat work once again top man !!!
$50
Price
Helpful?S 
samps45
United States
Ongoing collaborationLoved the fast communication and responsiveness of the team! Thank you I highly recommend reaching out with any project with web development! I will use them again! Thanks, Nate
$50
Price
Helpful?
Reviews
4 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (1) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
Most relevant
O oktrying
United States
Ongoing collaborationThere was a glitch with the design on the expiration box on the last page of the design. Seller told me it was a cache stored in phones browser. I trusted him and gave him the benefit of doubt but after delivery I discovered it was an error in the code. When I tried to contact seller, he made himself unavailable to contact and disappeared.
$50
Price
4 months
Duration
S Seller's Response
Helpful?N newsaga
United States
Thank you sir!
$50
Price
Helpful?Y yakoshi2022
United Kingdom
Ongoing collaborationGreat work once again top man !!!
$50
Price
Helpful?S samps45
United States
Ongoing collaborationLoved the fast communication and responsiveness of the team! Thank you I highly recommend reaching out with any project with web development! I will use them again! Thanks, Nate
$50
Price
Helpful?
