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✅ 15+ Years of Experience | ✅ PHP Laravel & Full Stack Specialist | ✅ React Native Mobile Developer | ✅ Tech Lead & Project Management Experience | ✅ API & Systems Integration Expert Full-stack Web Developer with over 15 years of experience delivering high-quality, scalable, and maintainable solutions. I specialize in backend development with PHP and Laravel, combined with modern frontend technologies such as React, Vue.js, HTML, and CSS. Solutions I Develop: ⭐ Web Applications 📱 Mobile Applications (iOS & Android) 🌐 Modern Websites 🛒 E-commerce Solutions ⚙️ WordPress Development 🔗 API Integrations 📊 Custom CRM Systems 📈 Administrative Dashboards 🤖 Web Automation & Process Optimization 🚀 SaaS Platforms I have solid experience building complete web applications, from architecture and API integrations to responsive user interfaces and performance optimization. I also develop mobile applications using React Native, ensuring a consistent experience across platforms. My focus is on writing clean, efficient code and delivering reliable solutions that meet business needs. I’m comfortable working independently or as part of a team, always aiming for clear communication and on-time delivery.

I build AI integrations, agent development, and workflow automation systems for sales, CRM, and operations teams: lead routing, follow-up, reporting, onboarding, and internal tools that run reliably in production. Top Rated Plus, 100% Job Success, $30K+ earned on Upwork, with active $100/hr automation contracts. Where I help most: - Sales and CRM automation: lead intake, qualification, routing, follow-up, pipeline updates, reminders, and reporting - AI workflow automation: n8n, Make, Zapier, Claude, GPT, APIs, webhooks, structured outputs, and custom logic - Internal operations systems: dashboards, data pipelines, document processing, onboarding flows, and team handoffs - AI agents and assistants: tool-calling workflows, RAG, multi-step automations, prompt systems, QA, and escalation paths Proof from previous work: - Built a SaaS product from scratch that reached 100,000+ registered users - Built 15+ n8n workflows for a 180+ bed hospitality operation, improving guest ratings from 9.1 to 9.3 while reducing manual workload - Engineered an AI image-processing system that cut operating costs by 90% - Delivered n8n and Asana workflow automation for an Upwork client with a 5-star review I am strongest when the project is not just connect tool A to tool B, but when you need someone to understand the business process, design the right workflow, build it, test edge cases, document it, and make sure the team can actually use it. Common systems I build: - AI lead intake and qualification - CRM automation and cleanup - Sales follow-up systems - Client onboarding automation - Reporting and operations dashboards - Data extraction and enrichment workflows - AI assistants for internal teams - API integrations between tools that do not connect cleanly out of the box Core stack: n8n, Make, Zapier, Claude API, OpenAI API, Codex, GPT, CRM automation, HubSpot, Pipedrive, GoHighLevel, ActiveCampaign, Airtable, Google Sheets, Slack, ClickUp, Monday, Supabase, PostgreSQL, Python, JavaScript, TypeScript, React, Node, REST APIs, GraphQL, webhooks, scraping, OCR, RAG, vector databases, and messaging APIs. If you have a messy workflow that is costing your team time, missed leads, manual follow-up, or unclear reporting, send me the process and I will map the cleanest automation path.

👋 About Me I automate operations using AI, API integrations, and n8n, eliminating repetitive tasks and allowing teams to focus on what creates the most value. I’m Caetano, a 5th-semester Information Systems student at PUCPR and a builder of automations and AI agents applied to real business problems. I build systems capable of: • processing hundreds of leads automatically • collecting thousands of documents at scale • running simultaneous automations • integrating CRMs, APIs, messaging platforms, and AI I share projects on YouTube at CGP Automação com IA and on Instagram at @cgpautomacaoia. ⸻ 🚀 Projects 24/7 AI SDR (WhatsApp + Pipefy + n8n + OpenAI) A system that engages leads automatically, qualifies contacts, and keeps the sales pipeline updated in Pipefy. Estimated impact: 5–10 minutes saved per lead 300 leads/month → 25–50 hours saved ⸻ Invoice Collection Automation at Scale — Alexandria During my time at Alexandria, I worked on optimizing the billing department’s invoice collection process by developing an automated system capable of collecting and organizing client documents at scale. The solution was built with n8n, ran across 3 simultaneous instances, and was based on a multi-bot architecture with JavaScript decision logic, allowing automated agents to interact with service systems to request and retrieve documents. After a few days of execution, the system had collected 1700 invoices, automatically organizing the PDFs. Result: an automated, scalable, and efficient process for the department. ⸻ 8-AI-Agent Team Automation of: • emails • contacts • calendar • research Estimated impact: 30–60 minutes saved per person per day (≈10–20 hours/month) ⸻ AI Sales Automation (Pipedrive + Gmail + Sheets + Calendar) Automatic lead classification and automated follow-ups. ⸻ Automatic Document Analysis — Tintas Farben A system that reads and summarizes PDF, Excel, and Word files, saving 15–30 minutes per document. ⸻ 🛠 Tech Stack Automation / Infrastructure n8n (queue mode) • Docker • Redis • PostgreSQL • Hetzner VPS Development Python • JavaScript • Node.js • Flask • Django Integrations Google APIs • Pipefy • Pipedrive • WhatsApp / Evolution API • LLM APIs • TTS APIs Infrastructure & Versioning Webhooks • Git • GitHub ⸻ 🗣 Languages Portuguese — Native English — Advanced ⸻ 💡 What Drives Me Turning operational processes into automated and scalable systems, using automation and AI to generate real efficiency in business operations. My focus is automation applied to real problems and measurable operational gains.

I have helped companies to develop (robust software) and quality according to what has been requested and within the established deadline. I like working teams, I am interested to help my coworkers as well to learn with them. I have been working with software development for 20 years inside educational companies, banking and the Federal government. Also, I already worked giving support at managing application servers (JBoss) and databases (Oracle, Postgres, Firebase). Through this way, I manage to improve my knowledge in this area. Therefore, I participated in a partnership with a startup android mobile development directly back end part. I develop Delphi system Client/Server, web applications .net com c#, modern web in Java applications (Jakarta EE / java 8) and angular utilizing concecpts of back end and front end, gather respectively through APIs REST. Skills - Developer Delphi, c#, Java, Angular, PL/SQL. - Scrum, Redmine, Integrations, Web services, REST. I look forward to making your schedule and helping you with your project. Please, send me an email or text me.

Fullstack engineer with 25+ years of experience building web and mobile products, from early MVPs to systems serving 140M+ users. I hold an M.Sc. and Ph.D. in Electrical & Computer Engineering, and I work mainly in JavaScript/TypeScript (React, Next.js, React Native, Node.js), and Python. I founded and led engineering at an EdTech startup that grew from nothing to 15k+ users and R$490k in annual recurring revenue, with churn under 10%. I owned the technology decisions, the architecture, and the code myself. As a Senior Software Engineer at a software consultancy, I've shipped 20+ production features for clients across industries, including a digital learning platform used by 140M+ people worldwide. Earlier, I spent 16 years in academia directing an innovation department, mentoring startups, and publishing research in distributed systems and mobile computing. If you need an MVP built quickly, a legacy system stabilized, or someone to own a feature end to end, I can help. Tell me about what you're working on and let's build something great together!

Hi, I'm David — a front-end developer who builds high-converting landing pages with React, Next.js, and Tailwind CSS. I help founders, startups, and agencies turn visitors into customers with pages that load fast, look sharp, and work flawlessly on every screen. A landing page is the first impression your business makes — so I focus on clean design, strong performance, and a layout built to convert. What I can do for you: • Custom landing pages built from scratch with React, Next.js, and Tailwind CSS • Fully responsive layouts that look great on mobile, tablet, and desktop • Fast-loading pages built with technical SEO best practices — semantic HTML, meta tags, and clean structure • Smooth animations and interactive details that make your brand stand out • Clean, maintainable code you can build on later I'm also co-founder of Upward, a digital studio where I deliver web projects for partner brands, so I'm used to working to a brief and a deadline. I care about clear communication and delivering work I'm proud of. If you have a project in mind, send me a message — I'd love to hear about it.