I'm a AI & Full-Stack Engineer based in Itapema, Brazil, with 7+ years of experience building modern web applications with AI intelligence - chatbots, workflow automation, and CRM systems that run without manual work. With 7+ years of experience in full-stack development and AI integration, I connect LLM APIs, vector databases, and no-code tools into end-to-end systems that capture leads, process data, and handle customer conversations automatically.

I specialize in GoHighLevel (GHL) automation - wiring CRM, funnels, and AI agents together with webhooks and external APIs to automate lead capture, follow-ups, and sales workflows completely.

Building intelligent systems that can reason, retrieve information, and automate business processes:

• Multi-step AI agents
• LLM-powered assistants
• RAG (Retrieval-Augmented Generation) systems
• Semantic search
• Knowledge-base chatbots
• AI workflow orchestration

Technologies: OpenAI API • Claude • Gemini • LangChain • AutoGen • Ollama • Vector databases (Pinecone, Qdrant, pgvector)

I create automation pipelines that connect tools, APIs, and AI models.

Examples:

• Lead qualification automation
• CRM workflow automation
• Automated customer support
• Document processing pipelines
• Data extraction workflows
• Approval and notification systems

Tools: n8n • Make • Zapier • Custom Python automation • Webhooks • REST APIs

Specialized experience building intelligent systems for finance operations:

• Invoice processing
• AP/AR automation
• Financial reconciliation
• ERP integrations
• Reporting automation
• Document intelligence

Experience with:

• NF-e XML processing
• ContaAzul API integration
• Banking APIs
• Financial dashboards
• Transaction data pipelines

Transforming unstructured business data into usable information:

• OCR pipelines
• PDF/document extraction
• Invoice intelligence
• Multimodal AI processing
• Data validation systems
• Exception handling workflows

Built an automated lead processing pipeline:

• Connected inbound sources with automation workflows
• Used LLM scoring and classification
• Routed qualified leads automatically
• Reduced manual sales operations

Stack: n8n + OpenAI API + Webhooks + CRM Integration

Developed an AI chatbot capable of answering questions from private business documents.

Features:

• Document ingestion pipeline
• Vector embeddings
• Semantic search
• Context-aware responses
• Knowledge-base automation

Stack: Python + LangChain + OpenAI + Qdrant

Built automation workflows for financial operations:

• ERP data extraction
• Transaction reconciliation
• Exception detection
• Automated reporting

Integrations:

• ContaAzul API
• Banking APIs
• NF-e XML processing

Created dashboards combining operational data with AI insights:

• Real-time metrics
• Business KPIs
• Data visualization
• Automated analysis

Stack: Next.js + TypeScript + PostgreSQL + AI APIs

✅ End-to-end AI automation development
✅ Strong full-stack engineering background
✅ Production-ready architecture
✅ Experience integrating business systems
✅ Clean documentation and maintainable code

I help companies transform repetitive manual processes into intelligent automated systems.

• receipt-ocr – AI + OCR pipeline for invoices and receipts
• openai-smart-vision – Document extraction & multimodal AI vision pipelines
• invoice-ai-processing – AP/AR automation, exception handling, financial reporting integration
• ai-reachgenie – Multi-step AI workflow orchestration
• n8n-nodes-contaazul – Brazilian ERP automation, NF-e, and bank integration

I am available for freelance, contract, or full-time roles in AI, Full-Stack, and finance automation systems. Let’s discuss your project and how I can deliver scalable, compliant, and intelligent solutions.

• 📱 WhatsApp: +1 (361) 332-6512
• 📧 Email: jeanlimaav@gmail.com

Let’s modernize finance operations with AI and automation! 🚀