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I will fix next js react bugs, typescript errors, and vercel deployment issues
Josiah O.
About this gig
Struggling with a broken Next.js build, stubborn React runtime error, or failed Vercel deployment?
I am a full-stack engineer specializing in Next.js (App & Pages Router), React, TypeScript, and Node.js. I will diagnose, isolate, and fix your code quickly with clean, production-ready solutions.
What I can fix for you:
- Next.js build failures, hydration mismatches, and routing errors
- React component lifecycle, re-rendering, and Zustand/Redux state bugs
- TypeScript type mismatches, interface errors, and build breaks
- Tailwind CSS layout misalignments, responsiveness, and broken UI components
- REST API, Prisma ORM, and PostgreSQL connection/query issues
- Authentication errors (NextAuth, JWT, session bugs)
- Vercel, Netlify, and Node server deployment crashes
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 Josiah O.
Josiah O.
Full Stack Web Developer, Nextjs React and Nodejs Specialist
- FromNigeria
- Member sinceMar 2025
- Avg. response time1 hour
Languages
Yoruba, English
I am a Full-Stack Web Developer with hands-on experience building fast, responsive web applications, custom e-commerce storefronts, and robust backend APIs.
My tech stack includes Next.js, React, TypeScript, Node.js, Tailwind CSS, Prisma, & PostgreSQL.
I specialize in turning design concepts and requirements into clean, scalable code, focusing on high performance, reliable state management, and seamless end-to-end integration. Whether you need a full web application built from scratch, a custom administrative dashboard, or reliable API troubleshooting, I deliver structured solutions on time
My Portfolio
FAQ
Should I contact you before placing an order?
Yes, please message me with your error logs or repository details first. This allows me to inspect the issue and confirm that we choose the right package or custom offer for your project.
What do you need from me to start fixing the bug?
I will need a description/screenshot of the error, access to the codebase (GitHub repo or zip file), and any environment variables required to run the project locally.
Can you fix bugs in a project you didn’t originally build?
Yes. I work extensively with existing codebases. Once you share repo access or your project files, I will trace the component architecture, isolate the error, and resolve it without breaking other features.
What if my bug is more complex than the package I selected?
If an issue requires deeper architectural refactoring, custom API re-engineering, or extensive database migration, I will assess the scope upfront and send you a custom offer before any work begins.
Will my codebase and sensitive credentials remain secure?
Absolutely. Your codebase and proprietary logic remain strictly confidential. I recommend keeping production API keys and secrets in your private .env.local and sharing only staging/dummy values needed for debugging.
Do you offer complete web application development as well?
Yes! I develop full-stack applications from scratch using Next.js, React, TypeScript, Tailwind CSS, and PostgreSQL. Feel free to check out my full-stack Gig or message me to discuss your custom project.
