Charls Catipay

Full-Stack AI Automation Engineer.
Building intelligent, headless web apps on N8N.

About Me

"I don't just connect apps; I build entire software ecosystems using low-code infrastructure. My expertise lies in treating N8N as a comprehensive backend framework—handling authentication, dynamic UI rendering, database management, and autonomous AI agents. I bridge the gap between traditional software engineering and high-speed automation."

Technical Stack

N8N Engineering

  • Backend Logic: Advanced Error Handling, Retry Strategies, Webhooks
  • UI Generation: Dynamic HTML/CSS/JS Injection
  • Security: Session Mgmt, Password Hashing, RBAC
  • Architecture: Headless Applications & Microservices

AI & Agents

  • Orchestration: Multi-Agent Chains (LangChain)
  • Models: OpenAI (GPT-4), Google Gemini (Vision), DeepSeek
  • Implementation: RAG, Computer Vision, HITL (Human-in-the-Loop)

Full-Stack Tools

  • Scripting: JavaScript (Node.js), Python, SQL
  • Database: PostgreSQL, Google Sheets (Relational)
  • APIs: Meta Graph API, REST, JSON Construction

Featured Systems

Genesis Content Engine [System II]

The Architecture

A sophisticated Multi-Agent AI system that acts as an autonomous creative director. It utilizes Google Gemini Vision to analyze visual inputs and an OpenAI Agent to generate strategic copy based on brand voice. The system creates a continuous loop of content generation without human input.

Key Engineering

Utilizes LangChain memory for context retention and complex JSON parsing to structure creative outputs into database records automatically.

N8NLangChainGemini VisionAutomated Creativity
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Headless Client Portal [System III]

The Architecture

A secure, client-facing dashboard built 100% within N8N. It serves dynamic HTML/CSS frontends via webhooks, allowing clients to manage marketing strategies and view analytics. It features a custom Login & Authentication System with session token validation and encrypted password hashing.

Key Engineering

Proves N8N can replace traditional backend servers (Node/Express). Handles session expiry, dynamic routing based on user ID, and secure form submissions.

N8N WebhooksHTML/CSS InjectionAuth/SecuritySession Mgmt
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"The Hopper" HITL Dashboard [System I]

The Architecture

A Human-in-the-Loop (HITL) system allowing clients to review, grade, and regenerate AI content before publishing. It integrates directly with the Meta Graph API to schedule approved posts automatically.

Key Engineering

Features real-time feedback loops where client interactions (Approve/Reject) trigger instant webhooks to update the database state or re-trigger the AI generation agents.

Human-in-the-LoopMeta Graph APIState Management
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Autonomous Workflows

End-to-end systems that operate without human intervention.

Autonomous Media Producer

The Challenge

Social media consistency often fails due to the manual overhead of matching graphics to brand themes daily, resulting in missed engagement.

The Solution

A self-sustaining engine using DeepSeek + Gemini to generate "scroll-stopping" visual prompts and captions, rendered via OpenRouter and auto-posted via Meta Graph API.

DeepSeekMeta APIImage Gen

Intelligent Speed-to-Lead Engine

The Challenge

Real estate leads from platforms like BiggerPockets often lose value because of the "lead decay" caused by slow, manual data entry and delayed email responses.

The Solution

Engineered a headless email parser that uses GPT-4o to scrape unstructured lead data from Outlook notifications. It instantly logs records to a Supabase backend and triggers personalized, HTML-formatted follow-ups with Calendly integration in < 60 seconds.

GPT-4oOutlook APIHeadless CRM

Integration Engineering

High-volume data pipelines and enterprise CRM orchestration.

GoHighLevel to SQL Data Pipeline

Challenge: Client needed raw data ownership and custom BI reporting outside of GHL's native limitations.

Solution: Engineered a fault-tolerant ETL pipeline in N8N. It handles API pagination to fetch thousands of lead records and syncs them to a private PostgreSQL database, enabling real-time Tableau/PowerBI dashboards.

GHL APIPostgreSQLETL

GHL to OpenDental Sync

Challenge: Dental staff wasted 60% of their time manually re-entering new leads from marketing (GHL) into the EMR (OpenDental).

Solution: Built a real-time bridge using Webhooks. When a lead is tagged "Booked" in GHL, N8N instantly creates a patient record in OpenDental via API, eliminating data entry errors and latency.

HIPAA CompliantOpenDental APIWebhooks

Hire an Engineer, Not just an Operator

I build robust, scalable automation infrastructure that powers businesses. Let's discuss your architecture.

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System Architecture