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Fiverr Pro
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$
USD
I will debug and fix any website and app error
Masoud Andiwal
About this gig
When your application throws a critical error, the layout breaks on mobile, or the database suddenly refuses to connect, you do not need a generic developer. You need a dedicated specialist who can diagnose the root cause immediately.
My name is Masoud, and as a computer science graduate, I do not just apply temporary patches. I analyze error logs, isolate the exact defect, and write clean, permanent code so the bug never returns.
What I resolve for you today:
- Frontend & 3D: Fixing responsive layouts and rendering issues with HTML, CSS, Tailwind, and JS. Resolving glitches in Three.js and Lottie animations.
- Frameworks: Fixing state bugs and component failures in React, NextJS, Vue.js, and React Native.
- Backend: Repairing broken APIs and server logic in PHP, Laravel, and Java.
- Database: Optimizing queries and fixing connection drops in PostgreSQL, MySQL, and Supabase.
My transparent process: Provide the error dump or description. I will replicate the environment, audit the issue, and deliver a secure, tested fix.
- Every minute down is a missed opportunity. Message me right now with your error details, and let me fix your code today.
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 Masoud Andiwal
Masoud Andiwal
Full Stack Developer and NextJS React Laravel Expert
- FromAfghanistan
- Member sinceOct 2025
- Avg. response time1 hour
Languages
English, Pashto, Persian
Hi! I'm Masoud, a Computer Science graduate and professional developer. Bringing my successful freelance experience from Truelancer to Fiverr, I specialize in turning complex problems into elegant solutions.
My Tech Stack:
• Web: NextJS, React, NodeJS , Laravel, PHP, JS, HTML/CSS
• Databases: MySQL, PostgreSQL, Oracle
• Desktop & Scripts: ElectronJS, Java, C++,
I don't just write code; I build secure, scalable systems. Whether you need a web app from scratch, a desktop tool, or backend optimization, I guarantee clean code and strict deadlines. Message me today!
FAQ
How quickly can you start working on my bug?
I prioritize emergency debugging. If you message me directly with your error details, I typically begin diagnosing the issue within minutes of reviewing your codebase and confirming the scope of the problem.
What information do you need from me to get started?
I will need a clear description of the error or a screenshot of the stack trace. Additionally, I need access to the affected codebase. You can provide this via a GitHub repository link, a zipped file of the project, or staging server credentials.
Will you work directly on my live production server?
To protect your active users, I prefer to troubleshoot the bug on a staging environment or a cloned local repository. Once the issue is resolved and tested, I will provide you with the exact corrected code or deploy it safely to your live server if requested.
What happens if you cannot fix the bug?
I perform a technical review before accepting any order. If I look at your error logs and determine the issue is outside my technical scope or caused by a restricted third-party service, I will inform you immediately so you do not waste your time or money.
How do I know what changes you made to my code?
I follow strict, professional version control practices. Upon delivery, I will provide a clear summary of exactly which files and lines of code were modified to resolve the issue, ensuring your codebase remains organized and transparent.
Do you fix bugs in older legacy code, or only modern frameworks?
I am comfortable debugging both modern frameworks like NextJS, React, and Vue, as well as complex legacy backend logic written in raw PHP or Java. Just send me the repository so I can review the architecture.
How do revisions work if the bug is not completely fixed?
I rigorously test all code before delivery. However, if the specific bug we agreed to fix still persists in your environment, I will revise the code at no extra charge. Please note that revisions are for the original bug only and do not cover new feature requests or entirely different errors that oc
Are you experienced with implementing complex animations?
Yes. In addition to core web development, I hold a motion design certification from the Lottie Creator Course. If your website bugs involve broken Three.js renders or malfunctioning Lottie animations, I have the specific technical training to resolve those visual integrations flawlessly.
