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Fiverr Pro
Nederlands
$
USD
I will fix backend and frontend bugs on your custom web app
Juan B
Over deze dienst
Hi, I'm Juan. I'm a senior full-stack web developer with 15+ years of experience, and I've been fixing weird, urgent, frustrating web bugs for international clients since 2011.
WHAT I FIX:
- JavaScript / TypeScript errors and console errors
- Broken layouts (mobile, responsive, CSS issues)
- React, Next.js, Angular, Vue, SolidJS, plain JS
- Forms that don't submit, buttons that don't click
- Slow pages and performance issues
- API integrations and CORS errors
- WordPress / theme JS conflicts
- Anything else web message me first if you're unsure
HOW I WORK:
1. You send me the URL, a description, and (if possible) access to the code
2. I confirm I can fix it AND the price, before you order
3. I deliver a clean fix with a short explanation of what was wrong
NOT INCLUDED: full redesigns, large new features, server admin work those need a custom offer.
I respond to messages within ~2 hours during European working hours. Native Spanish speaker, fluent English. Message me before ordering so I can confirm scope and timing.
Respecteer de rechten van derden
Let erop dat het tegen het beleid van Fiverr voor freelancers is om thema's, templates of andere elementen in het geleverde werk op te nemen die inbreuk maken op de rechten van derden of toepasselijke wetten. Lees er meer over in onze Gids voor verantwoorde digitale creatie.
Maak kennis met Juan B
Juan B
Juan Barba
- Afkomstig uitPeru
- Lid sindssep 2020
Talen
Spaans, Engels
Senior full-stack web developer, 15+ years. I build fast, responsive web apps and landing pages with React, Next.js, Angular, Node.js, and NestJS — and I fix bugs others won't touch.
Past work: multilingual platforms for Foreign Affairs Magazine, high-traffic content sites at Media Mechanics, an AI/LLM SaaS I built end-to-end as the sole engineer, and a nationwide data platform in Panama.
Based in Spain (CET). Fluent English, native Spanish. Fast replies, clean code. Send me your problem — I'll tell you honestly if I can solve it.
Veelgestelde vragen
Will you fix any kind of bug?
Almost any front-end or full-stack web bug. I can't help with native mobile apps (iOS/Android), game engines, or hardware. Send me a message first if you're not sure.
Do I need to give you access to my code?
Ideally yes — GitHub/Bitbucket repo access or a ZIP. For very small fixes I can sometimes work from the live site's dev tools, but code access is faster and safer.
What if you can't fix it?
I'll tell you upfront before you order, and I won't waste your time. If we start and I genuinely can't fix it (rare), I'll refund.
Do you work in Spanish?
Yes — native Spanish speaker. We can communicate in either language.
Can you also add new features?
Yes, but those go in a custom offer (or as a different gig). This gig is specifically for fixes.
