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USD
I will solve complex react or nextjs bugs quickly and cleanly
Asa
About this gig
Is your React or Next.js application throwing errors, failing to build, or behaving unpredictably?
With 7+ years of professional experience in React and modern frontend architecture, I help founders and businesses quickly diagnose and resolve complex issues in both development and production environments.
I can help with:
- Build failures & deployment issues
- Hydration errors (Next.js)
- React hooks & state management bugs
- API integration problems
- Authentication & dashboard issues
- TypeScript errors
- Performance bottlenecks
I focus on identifying the root cause and delivering clean, maintainable solutions not temporary patches.
You'll receive clear communication, fast turnaround, and production-ready code that scales.
Please contact me before ordering with details about your issue so I can assess scope and recommend the right package.
Lets get your application stable, optimized, and running smoothly again.
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 Asa
Asa
Senior Frontend Engineer, React and NextJs, UI UX driven
- FromSweden
- Member sinceMay 2019
- Last delivery6 years
Languages
English, Swedish, Spanish
Senior Frontend Engineer with 7+ years of experience building production-ready web apps and marketing websites using React, Next.js, TypeScript, and modern CSS. Strong UI/UX background, detail-oriented, and focused on clean, maintainable code. I help startups and businesses ship fast, scalable, and user-friendly solutions — from small fixes to full features.
My Portfolio
FAQ
What information do you need before starting?
Please provide: - A clear description of the issue - Error messages or screenshots - Access to the repository or relevant files - Deployment details (if applicable) - Steps to reproduce the problem The more details you share, the faster I can diagnose the root cause.
Do you fix urgent production issues?
Yes. If your application is down or breaking in production, I offer fast delivery options. Please contact me first so I can assess urgency and availability.
What if the issue is more complex than expected?
If the issue requires deeper investigation or affects multiple parts of the codebase, I will inform you immediately and recommend upgrading the package before proceeding.
Do you work with existing codebases?
Yes. I regularly work with existing React and Next.js projects, including large or legacy codebases. I focus on understanding the structure before implementing clean and scalable fixes.
Do you provide long-term support?
Yes. After resolving your issue, I’m happy to continue supporting your project with performance optimization, UI improvements, or ongoing development.
Do you guarantee bug fixes?
I guarantee professional investigation and clean implementation. In rare cases where the issue is caused by third-party services or external infrastructure, I will clearly explain the root cause and recommend next steps.
