Experienced Fullstack Developer from Arica, Chile specializing in JavaScript/TypeScript ecosystem with expertise in modern web technologies, mobile development, and scalable backend architectures.

• 🌱 Mastering Flutter for cross-platform mobile development
• 🛠️ Building enterprise solutions with NestJS and React
• 🤖 Integrating AI/ML capabilities with OpenAI APIs
• 📱 Developing PWAs and mobile-first applications

🏢 Backend Developer / Web Scraping Specialist @ Depot Group (Jul 2025 - Oct 2025)

• Advanced web scraping with NestJS and Puppeteer
• WhatsApp Business API integration with Twilio
• AI-powered chatbots using OpenAI Assistant API

🏢 Fullstack Developer @ JL LTDA (Apr 2024 - Dec 2024)

• Flutter POS system with Bluetooth printer integration
• GraphQL backend with PostgreSQL and role-based permissions
• Real-time inventory management with WebSockets

🏢 Support/Fullstack @ Klog (Feb 2021 - Mar 2024)

• React 18 and Next.js 13 frontend development
• Apollo Client state management and GraphQL optimization
• Performance optimization and debugging

Modern corporate website for heavy machinery transport company

• Tech: Gatsby, React, AWS Lambda, JAMstack
• Features: Multi-language (ES/EN), PWA, SEO optimized

Enterprise point-of-sale system with hardware integration

• Tech: Flutter, GraphQL, PostgreSQL, WebSockets
• Features: Barcode scanning, Bluetooth printing, Real-time sync

AI-powered industrial parts consultation chatbot

• Tech: NestJS, OpenAI API, Twilio WhatsApp API
• Features: Automated responses, Multimedia handling, Custom functions

💼 Open to opportunities in fullstack development, especially roles involving React, NestJS, Flutter, or AI integration.

📧 Contact: fmarcosdev@gmail.com
🌐 Portfolio: fmarcos.dev
💼 LinkedIn: freddymhs