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I will expertly fix PHP, javascript, HTML, and CSS bugs
Jens W
About this gig
Is your website unstable? Are users complaining about errors? Or is performance simply not good enough?
When your web project suffers from hidden problems, you don't need a handyman, you need a "Digital Surgeon." My specialty is the precise and deep resolution of the most complex technical problems. I don't just apply a "patch"; I fix the problem correctly, ensuring the long-term stability and optimal performance of your site.
With deep expertise in web development, I am ready to tackle:
- Backend Errors: Fixing syntax, logic, and fatal errors in PHP and issues with MySQL databases.
- Frontend Bugs: Resolving problems in JavaScript, HTML, and CSS for perfect functionality and appearance.
- Server Issues: Eliminating errors like 500, 503, 404 that stop your site from working.
- Code Quality: Debugging and refactoring existing code to improve its quality and maintainability.
- API & Integrations: Fixing issues with APIs and other third-party services.
Why choose me?
- Speed: I understand the urgency and react quickly to get your site back on track.
- Clarity: I explain complex technical aspects in simple, understandable language.
- Quality: I guarantee clean, standards-compliant code that solves the
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 Jens W
Jens W
- FromGermany
- Member sinceMar 2025
- Last delivery10 months
Languages
English, German
Project manager and programmer for various pages and media content
Maintenance and conception of websites in various programming languages and development environments
Creation of a billing statistics module for payment systems in the telecommunications / micropayment sector
Creation and management of complex network structures and their marketing in the cable / satellite / IPTV sector. Cooperation with MyVideo and Yahoo.
AHORN-REISEN GmbH / Hotel booking platform
TimeRide GmbH / Multimedia
CommDoo GmbH / Website
Cologne Cathedral / Website 3D Film
Dr. Dr. Plugmann / App and various others
FAQ
Can you fix my specific problem (PHP error, CSS issue, etc.)?
Yes. My expertise covers a wide range of issues including PHP, JavaScript, HTML/CSS, MySQL databases, and server errors. I diagnose and fix the root cause to ensure your site runs smoothly.
Can you work on my WordPress / Shopify site?
Yes. While I don't configure plugins from the admin panel, I specialize in fixing the underlying code (PHP, JS, CSS) that powers these platforms. If a plugin or theme is causing a code-level error, I can fix it.
How quickly can you start?
I react quickly, especially for urgent tasks. My Premium package offers priority "front-of-the-line" service. Please contact me directly to confirm my current availability.
Do you write clean, standard-compliant code?
Absolutely. Quality and clean code are my top priorities. This ensures your project is stable, secure, and easy to maintain in the future.
