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Facundo GuardiaFG

Facundo Guardia

Full Stack Developer & AI Engineer

€115/day
Salobreña, ES
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Facundo

I am an AI engineer. I design products where artificial intelligence is not a decoration: it is the system's engine.

I build automation architectures for real operational problems in health, government, and SaaS, from microservices that scrape public portals to clinical auditing with LLMs and AI-native platforms designed from day one.

Today I lead AI engineering in the Colombian health sector and, in parallel, I build Sazonia.

My main stack: TypeScript, Node.js, Next.js, and event-driven architectures. For agentic systems and RAG: Python and the LangChain ecosystem (LangGraph, LangSmith).

🧠 My differential approach

I design AI layers with control, traceability, and clear boundaries
I apply Context Engineering for consistent and reproducible results
I automate complex workflows with n8n, integrating multiple platforms
I think of every solution for production, not for demos
AI governance from day 0: confidence thresholds, prompt versioning, human review in the gray area

🚀 How can I help you?

✨ Custom automations — workflows that reduce errors and save real operational time

⚙️ AI layers for product — integration of LLMs as a core capability, not a decorative feature

📦 SaaS Agent-Ready — products designed to work with agents from the first sprint

I believe in useful, traceable, and governable AI. If it doesn't generate real, measurable impact, it's not well integrated.
  • Spanish

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • SIS Servicios Integrales en Sistemas
    AI Engineer & Full Stack Developer
    HEALTH AND WELLNESS
    February 2026 - Today (6 months)
    Colombia, Colombia
    AI engineer and full-stack developer at SIS, building applied AI and automation solutions for the Esculapio system in the Colombian health sector.

    🤖 AI and Automation Projects:

    - Governmental Scraping Microservice — Hono + TypeScript + Playwright + RabbitMQ. Automates queries to 6 Colombian government portals (ADRES, RUNT, SISBÉN, Procuraduría, Registraduría, Policía) during patient admission. Includes automatic captcha resolution (OCR + 2Captcha) and anti-bot evasion techniques. Eliminates 3–5 minutes of manual processing per patient.

    - AI Clinical Note Auditing — Service that analyzes clinical notes in real-time with GPT-4.1 detecting inconsistencies, document quality issues, and copy-pasting. Implemented with responsible AI: confidence thresholds, human review in the gray area, prompt versioning, and governance dashboard.

    - SOAT Cap Certificate — TypeScript/Hono microservice that unifies certificate downloading, classification, and uploading to Power BI dashboards for La Previsora and Seguros Comerciales Bolívar. Direct impact on IPS billing and cash flow.

    🧱 Frontend & Architecture:
    Design and implementation of frontend architecture for Esculapio (legacy migration → modern web platform), including Design System and Backend for Frontend (BFF).
    Leadership Full-Stack Development Microservices Artificial Intelligence Front-End Development
  • Sinergia Soluciones de Software-Remoto
    Full Stack Developer
    SOFTWARE PUBLISHING
    January 2025 - February 2026 (1 year and 1 month)
    Medellín, Colombia
    Development and deployment of autonomous AI agents for SinergIA clients, covering sales (lead scoring and follow-ups), customer service (contextual chatbots), inventory (stock prediction), and HR (CV screening and onboarding).
    Integration of workflows with n8n and LLMs (Claude, GPT), automating repetitive processes and reducing manual times by 60-80% depending on the case, aligned with Cristian Betancur's vision of accessible AI and real results.
    Design of agent-friendly systems with RAG and advanced prompt engineering, incorporating AI into existing platforms to enhance functionalities such as predictive analysis and resource optimization.
    Direct collaboration with CEO Cristian Betancur on customized projects: from data preparation to strategic advice for scaling automations in Colombian SMEs.
    Key stack: Next.js/Vercel (frontend/backend), Supabase/Neon (DB), n8n (orchestration), Claude API (agents), with a focus on governance (quality monitoring and traceability).
    Next.js Automation Vercel AI Agent Node.js
  • Patito Media-Motril,
    Web Development
    TECH
    September 2024 - February 2025 (5 months)
    Granada, Spain
    I designed the landing page for Patito Media, which includes an online booking functionality and a client area under development. In this section, clients will be able to access a dashboard with all their service information, including contracts, payment receipts, campaign statistics, project progress, and technical support. Additionally, Patito Media entrusts me with software projects for their clients, covering web and mobile application development.
    Web Development External API Integration Next.js Supabase n8n

Recommendations

Pablo AraujoPA
RL
Pablo Araujo and 1 other person have recommended Facundo

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Education

  • Interface Designer and Front-End Developer
    Udemy
    2020
    Programas enfocados en el diseño y desarrollo de interfaces digitales impactantes. Me especialicé en herramientas como Figma, TailwindCSS y Shadcn UI, que utilicé para crear experiencias centradas en el usuario. Este aprendizaje me permitió unir habilidades de diseño y desarrollo, destacándome en la construcción de productos digitales que combinan estética y funcionalidad.
  • Front-End Developer with React and React Native
    Platzi
    2022
    Formación especializada en tecnologías clave para la creación de interfaces de usuario dinámicas y aplicaciones móviles. Aprendí a manejar React y React Native para desarrollar experiencias visualmente atractivas y funcionales, adaptadas a diversos dispositivos. Profundicé en conceptos avanzados como el estado de aplicaciones, animaciones y optimización para móviles, logrando combinar diseño intuitivo con rendimiento técnico.

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