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I am a backend developer with over 2 years of experience building modern web applications. I specialize in Node.js, NestJS, and TypeScript, with strong experience in relational and non-relational databases (PostgreSQL, MongoDB), creating scalable, maintainable, and production-ready solutions. I also work comfortably with React and Next.js on the frontend when a project requires full-stack delivery. Whether you need a SaaS application, dashboard, internal tool, AI integration, or custom web platform, I can help transform your ideas into reliable software. I build complete web applications including: • Modern frontend development with React and Next.js • Backend APIs using Node.js and TypeScript • Authentication (JWT, OAuth) • Database design with PostgreSQL • REST API development and third-party integrations • Responsive and user-friendly interfaces • Performance optimization and scalable architectures Technical Skills Frontend • React • Next.js • TypeScript • Tailwind CSS • HTML5 / CSS3 / JavaScript Backend • Node.js • Express • PostgreSQL • Redis • REST APIs • Authentication Integrations • Stripe • OpenAI API • Email services • Webhooks • Third-party APIs What You Can Expect ✓ Clean and maintainable code ✓ Clear communication throughout the project ✓ Scalable and production-ready solutions ✓ Attention to performance and user experience ✓ Reliable delivery focused on your business goals I'm always interested in building products that solve real problems and create value for users.

👋 Introduction Hi, I’m a Junior AI & Full-Stack Developer with 6+ years of experience building modern, scalable web applications for startups and growing businesses. I specialize in SaaS platforms, production-ready MVPs, dashboards, and AI-enabled web apps using React, Next.js, TypeScript, and Supabase. My strength lies in combining polished, UX-driven frontend development with a pragmatic, scalable backend, helping founders ship faster without accumulating technical debt. I don’t just write code - I help turn ideas into real, usable products that are ready for users, revenue, and growth. 📌 Current Status ✅ Available for freelance & long-term contracts 🌍 Open to working across all time zones ⏱️ 40+ hours/week if required 🧠 Professional Summary I help startups and product teams design, build, and scale frontend-heavy full-stack applications. My focus is on clean architecture, performance, and maintainability, ensuring the product remains easy to extend as the business grows. Whether you need: - A startup MVP from scratch - A SaaS dashboard with authentication & subscriptions - A Next.js frontend connected to Supabase or APIs - Or AI integrations using OpenAI I can take ownership from concept to production. 🚀 What I Build - SaaS platforms & subscription-based products - Startup MVPs & prototypes (production-ready) - Dashboards & admin panels - AI-powered web applications - Internal tools & data-driven apps 🧩 What I Handle - Frontend architecture & UI systems - Backend APIs, databases & authentication - Payments & subscription billing - Deployment, CI/CD & monitoring - Scaling & long-term maintainability 🛠️ Tech Stack & Skill Set 𝙁𝙧𝙤𝙣𝙩𝙚𝙣𝙙 𝘿𝙚𝙫𝙚𝙡𝙤𝙥𝙢𝙚𝙣𝙩 - React.js - Next.js (App Router, Server Actions, SSR, SSG) - TypeScript & JavaScript (ES6+) - Tailwind CSS, shadcn/ui, Material UI (MUI) - Responsive & UX-focused UI development - State management (Redux Toolkit, Zustand) - Forms & validation (React Hook Form, Zod) - Data visualization (Chart.js, Recharts, D3.js) 𝑩𝒂𝒄𝒌𝒆𝒏𝒅 & 𝑭𝒖𝒍𝒍-𝑺𝒕𝒂𝒄𝒌 - Node.js, Python - Express.js & NestJS - Supabase (PostgreSQL, Auth, RLS, Realtime) - Firebase - REST & GraphQL APIs - Authentication & role-based access - Database design & optimization (PostgreSQL, MySQL, MongoDB) 𝑪𝑴𝑺 & 𝑬-𝑪𝒐𝒎𝒎𝒆𝒓𝒄𝒆 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 - WordPress Developer, WooCommerce - Shopify Developer, Shopify Admin API - PHP, Laravel - Custom E-commerce Solutions 𝑵𝒐-𝑪𝒐𝒅𝒆 / 𝑳𝒐𝒘-𝑪𝒐𝒅𝒆 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 - Bubble Developer - Adalo, Glide, Thunkable - AppSheet, Softr, Bravo Studio, AppMySite 𝑪𝒍𝒐𝒖𝒅 & 𝑫𝒆𝒗𝑶𝒑𝒔 - AWS, Docker, NGINX - CI/CD (GitHub Actions, GitLab CI) - Firebase, Supabase, Vercel, DigitalOcean - Linux Server Administration - Database Scaling & Performance Optimization 𝑨𝑰 & 𝑨𝒖𝒕𝒐𝒎𝒂𝒕𝒊𝒐𝒏 - AI Integration, LLMs - OpenAI API, Claude - AI Agents, RAG Pipelines - AI Automation Workflows - Document Processing & Voice AI 𝑷𝒂𝒚𝒎𝒆𝒏𝒕𝒔 & 𝑻𝒉𝒊𝒓𝒅-𝑷𝒂𝒓𝒕𝒚 𝑰𝒏𝒕𝒆𝒈𝒓𝒂𝒕𝒊𝒐𝒏𝒔 - Stripe Integration, Paystack, Flutterwave - Twilio, LiveKit, VoIP Systems - Mapbox Integration - LinkedIn Ads API 𝑺𝒂𝒂𝑺 & 𝑰𝒏𝒕𝒆𝒈𝒓𝒂𝒕𝒊𝒐𝒏𝒔 - Stripe (payments, subscriptions, billing) - OpenAI / LLM API integrations - Third-party API integrations - Webhooks & background jobs 𝑫𝒆𝒗𝑶𝒑𝒔 & 𝑻𝒐𝒐𝒍𝒊𝒏𝒈 - Vercel, AWS - Docker - CI/CD (GitHub Actions) - Monitoring & error tracking (Sentry, PostHog) - Git (GitHub, GitLab) 𝑷𝒓𝒐𝒅𝒖𝒄𝒕𝒊𝒗𝒊𝒕𝒚 & 𝑨𝑰 𝑻𝒐𝒐𝒍𝒔 - Cursor - GitHub Copilot - Claude Code - Replit / Lovable - Prompt Engineering & AI-assisted development 🧪 Experience Highlights - Built and shipped multiple SaaS platforms used by real customers - Delivered startup MVPs from idea to production in weeks - Designed secure Supabase backends with RLS and scalable schemas - Implemented subscription billing systems with Stripe - Created high-performance dashboards and admin panels - Integrated AI features to automate workflows and user interactions 🏷️ Tags / Keywords (SEO Optimized) Senior Full-Stack Developer, Frontend-Focused Full-Stack, SaaS Developer, MVP Developer, Startup Developer, Product Engineer, React Developer, Next.js Developer, TypeScript Developer, Supabase Developer, PostgreSQL, Stripe Integration, Dashboard Developer, Admin Panel Developer, AI Web Developer, OpenAI Integration, Subscription Billing, Scalable Web Apps 🤝 Why Work With Me? - Product-focused mindset (not just tasks) - Clean, maintainable, scalable code - Strong communication & ownership - Startup experience - I understand speed and quality - Long-term thinking, even for MVPs ✅ Closing Statement If you’re looking for a reliable senior developer who can take your idea seriously and turn it into a professional-grade product, I’d be happy to help. Let’s build something impactful 🚀

Hi, I'm a Node.js Developer. I’ve been freelancing for 7 years and have also worked with two companies. I specialize in: JavaScript: (Node.js, Express, Next.js, React, Puppeteer, Playwright, Strapi) PHP: (Laravel, Livewire, Blade, Eloquent) Frontend: (HTML/CSS, Bootstrap, TailwindCSS, Flexbox) Databases: (MySQL, MongoDB) DevOps: (Docker, Linux, AWS) I only take on projects I know I can complete successfully, ensuring top-notch results and client satisfaction.

I'm a Full-Stack Developer with 4+ years of experience building web applications, SaaS platforms, internal tools, dashboards, APIs, and automation systems for startups and businesses. I work across both frontend and backend development, so I can help build a complete product, add new features to an existing application, fix bugs, improve performance, or integrate third-party services. I can help with: • Full-stack web application development • Next.js and React applications • Backend development with Node.js and Python • REST API development and integrations • Supabase and PostgreSQL databases • Authentication, user roles, and permissions • SaaS products and MVPs • Admin panels, dashboards, and internal tools • AI features and automations • Payment and subscription integrations • Bug fixing, maintenance, and performance improvements • Deployment and production setup I'm comfortable joining existing projects, understanding unfamiliar codebases, identifying what needs to be fixed, and delivering practical solutions without overcomplicating the system. I can also take a project from an initial idea or design to a complete, production-ready application.

🚀 Fullstack Web Developer | React, Node.js & Scalable Web Apps Hi! I'm Angel, a highly skilled Fullstack Developer and AI Engineer with 4+ years of experience helping startups and businesses build modern, scalable, and high-performance web applications. I specialize in: ✅ Custom web development using React, Next.js, and Node.js. ✅ Optimizing website performance for fast and seamless user experiences. ✅ Building secure and scalable backend architectures with Nest.js, PostgreSQL, and MongoDB. ✅ API integrations, cloud deployments, and DevOps solutions with AWS, Firebase, and Vercel. ✅ AI integreations, AI driven development, Skills, MCPS, Prompt best practices. 💡 Why hire me? I provide clean, maintainable, and well-documented code. I meet deadlines and communicate effectively, ensuring smooth collaboration. I’ve worked on startups, enterprise solutions, and no-code platforms, so I adapt to any project. I don’t just write code—I help businesses solve problems and improve their digital presence. 🛠 Tech Stack: 🚀 Frontend: React, Next.js, Redux Toolkit, Styled Components, SCSS, WebSockets. 🖥️ Backend: Node.js, Express, Nest.js, JWT, PostgreSQL, MongoDB, AWS Lambda. 🔧 DevOps & Tools: Git, GitHub, GitLab, Slack, Trello, Notion, Firebase, Vercel, Nginx. 🤖 AI: OpenAI, Codex, Copilot, MCPs, Custom Skills, Integrations, Embeddings, RAG 📌 Let’s build something amazing together! Contact me and let’s discuss your project.

Hi, I'm Jonathan — a Full Stack Developer specialized in building SaaS platforms, dashboards, and scalable web applications using React, Next.js, Node.js, and PostgreSQL. I develop both frontend interfaces and backend services, focusing on clean architecture, maintainable code, and systems that perform reliably in production. My experience includes: • Full Stack SaaS platforms • dashboards and analytics systems • REST APIs and backend services • database architecture with PostgreSQL and Prisma • third-party integrations (Stripe, external APIs) • modern frontend development with React and Next.js I enjoy solving complex problems and building products that deliver real value to businesses and users. Before becoming a developer, I spent 12 years working in industrial automation and maintenance at Toyota Argentina, which shaped my analytical mindset and systematic approach to problem solving. If you're looking for a developer who can take ownership of features and deliver reliable solutions, I’d be happy to collaborate.