Hire the Best CSS3 Developers in Santa Cruz de la Sierra, BO

I design and build websites and web apps. Both halves, one person, one invoice. ⭐ React, Next.js, Node.js/Express, Firebase, Supabase, TypeScript, Tailwind ⭐ Design too: brand identity, logos, UI. Not a template with your logo dropped in ⭐ AI chatbots that answer from your own documents (RAG, OpenAI + LangChain) ⭐ Cambridge C1 Advanced, Grade A. Fluent English, native Spanish ⭐ Bolivia, GMT-4. Full workday overlap with US clients Most developers hand you a working site that looks like every other site. Most designers hand you a beautiful mockup nobody can build. Hiring both costs double and they blame each other when something breaks. I do the design and the build, so you get one person who's accountable for how it looks and whether it works. 𝗪𝗵𝗮𝘁 𝗜 𝗱𝗼 1. Marketing sites and landing pages Next.js and React, fast, responsive, built for SEO. If you don't have branding yet, I can do that first: logo, color palette, type system, the full spec. 2. Web applications Dashboards, admin panels, client portals, booking and registration flows. Firebase or Supabase back end with auth, file storage, and security rules written properly. 3. AI chatbots on your documents (RAG) I built a document management platform for a law firm with an assistant that answers questions about their case files: role-based access for three user types, document search, integrated calendar, and a chatbot grounded in the firm's own records. A bot that invents answers is worse than no bot, so retrieval quality is where the work goes. 4. Fixing what someone else left behind Bug fixes on React and Firebase codebases. Half-finished builds that need someone to actually close them out. 𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸 I ask the scoping questions before writing code, not halfway through. Updates in plain language. Every delivery includes a short summary of what changed and why, so your codebase still makes sense after I'm gone. Message me with what you're building. I reply fast. React, Next.js, Node.js, Express, Firebase, Firestore, Supabase, TypeScript, JavaScript, Tailwind CSS, HTML5, REST API, web design, landing page, website design, brand identity, logo design, UI/UX, authentication, LangChain, OpenAI, RAG chatbot, full stack development

Highlights ✅ AI-powered Business Automation ✅ 100% Job Success ✅ 100% Commitment to Client Satisfaction ✅ 15+ Years of Experience ✅ High-Quality Results & Long-Term Relationships ✅ WordPress & PHP Specialist Hi, I’m Jesús. I’m a Full Stack Developer with 16+ years of experience building websites, CRMs, automations, and business platforms. Today I combine that experience with AI-assisted development using GPT-5, Claude Code and modern AI workflows to deliver projects significantly faster without sacrificing code quality. I specialize in: • Custom WordPress Development • WooCommerce • Laravel Applications • API Integrations • AI-powered Business Automation • CRM Development • Performance Optimization • Bug Fixes & Maintenance Unlike developers who rely only on AI-generated code, I use AI as a productivity accelerator while applying years of engineering experience to architecture, security, scalability and maintainability. That means you get: ✅ Faster delivery ✅ Better code quality ✅ Lower development costs ✅ Long-term maintainability I can help you build: • Corporate Websites • SaaS Platforms • Custom CRMs • AI Workflows • WooCommerce Stores • Internal Business Systems • Custom APIs • Lead Automation If you’re looking for someone who understands both modern AI development and traditional software engineering, I’d be happy to help.

I usually describe myself as an Analyzer in a Developer's body, having the midset to break things but the toolset to create and restore. I have several years of experience with Magento, WordPress, ecommerce, Software development and Sever Management since 2008. Since 2012, I am a CSM (Certified Scrum Master), and since then I have used it in several development teams to deal with projects ranging from native mobile technologies, Ecommerces, data analysis systems, data scrapping to web consulting IT & cloud infrastructure development. My experience: Technologies: MEAN, LAMP, ASP.NET Front-end languages: JavaScript, HTML, CSS Front-end frameworks: Angular and React Back-end languages: PHP and Python Back-end frameworks: Laravel, Node.js, jboss Databases: Oracle, MySQL, PostgreSQL Platforms: Amazon Web Services (AWS), Google Cloud Platform (GCP), My skills: Front-end: SPAs, UI/UX, page layout, views, and the client-side scripts that communicate with the back-end. Responsive Design (Bootstrap 4), HTML 5, CSS, JavaScript, Angular 5 with TypeScript. Back-end: Database management, API integrations, and the server-side logic that powers the application. Security: User accounts, authentication, access privileges, ACL and tokens. Testing: Coordinating unit-tests, integration and regression testing across the stack. Project manager: Agile, Scrum, DevOps.

responsibility, quality and assurance