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Fiverr Pro
English
$
USD
I will fix react js, next js, node js and API bugs fast
Md. Sayem
About this gig
Is your React, Next.js, or Node.js web app broken by bugs, errors, failed APIs, or deployment issues?
I will diagnose and fix React JS, Next JS, Node JS, Express, JavaScript, and TypeScript problems in your web application. I focus on the root cause, make a clean and minimal code change, and test the affected workflow before delivery.
I can fix:
- React UI, state, forms, routing, and responsive bugs
- Next.js SSR, hydration, build, and Vercel deployment errors
- Node.js and Express backend crashes or API bugs
- Authentication, permissions, database, and integration issues
- JavaScript or TypeScript errors, broken features, and performance problems
You receive:
- A tested bug fix
- Clean code that respects your existing structure and Git workflow
- A clear explanation of the cause and solution
- Professional communication and on-time delivery
Please message me before ordering with your tech stack, exact error, reproduction steps, expected result, and repository or safe staging access. New features, full app development, redesigns, migrations, and new deployments require a custom offer.
Get to know Md. Sayem
Md. Sayem
Full Stack Web Developer with React Node JS and Python
- FromBangladesh
- Member sinceOct 2021
- Last delivery3 years
Languages
English
I’m Md. Sayem Hossain, a full-stack web developer specializing in reliable web applications and root-cause bug fixing. I work with React, Next.js, Vue, Node.js, Express, Python, Django, FastAPI, APIs, databases, and WordPress. I help diagnose frontend and backend issues, improve performance and security, integrate APIs, and build or refine features. My approach is simple: understand the problem, make the smallest safe change, test the affected workflow, and communicate clearly from start to finish. You receive clean, maintainable work and a dependable handover.
Other Software Development Services I Offer
FAQ
What access and information do you need?
Usually I need repository access or a source-code archive, reproduction steps, logs, and a safe test or staging environment. Do not send passwords in chat; use Fiverr-approved secure access methods.
What counts as one bug?
One reproducible issue with one expected outcome. Related errors from the same root cause can often be handled together; unrelated issues need the Standard, Premium, or a custom offer.
Which technologies can you work with?
I work with React, Next.js, Vue, Node.js, Express, Django, FastAPI, REST APIs, and common SQL or NoSQL databases. Message me first if your stack is different.
Do you test the fix?
Yes. I reproduce the issue when possible, apply the fix, and verify the affected flow. Broader regression coverage depends on the package and available test environment.
Is deployment included?
Deployment is not automatically included unless it is agreed in the order. I can quote deployment as an extra or custom offer after reviewing your hosting setup.
What is not included in this gig?
New features, full redesigns, large migrations, malware creation, unauthorized access, academic cheating, and work outside Fiverr are not included.
