Sfoglia categorie
Esplora
Fiverr Pro
Italiano
$
USD
I will fix backend and frontend bugs on your custom web app
Juan B
Informazioni su questo servizio
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.
Rispettare i diritti di terzi
Ricorda che è contrario alle politiche di Fiverr per i freelance includere temi, modelli o qualsiasi altro elemento che violi i diritti di terzi o le leggi applicabili nell'opera consegnata. Per saperne di più, consulta Guida alla creazione digitale responsabile.
Scopri di più su Juan B
Juan B
Juan Barba
- DaPerù
- Membro daset 2020
Lingue
Spagnolo, Inglese
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.
FAQ
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.
