The n8n environment I administer has surpassed 10,000 workflow executions in production. Mala Direta ran six campaigns over a 1,020-contact base; its main public workflow contains 158 nodes.
Open Mala Direta ↗SKILLS AND PRACTICAL EXPERIENCE
Automation, AI, integrations and processes applied in real projects.
Below are the technologies and practices I use across internal systems, automations, public projects and products in development. The links lead to the projects where each skill appears with more context.
01
AUTOMATION AND PROCESSES
From workflow discovery to a production automation.
I map processes with BPMN and AS-IS/TO-BE, gather requirements with users and stakeholders, document business rules, exceptions, approvals and traceability needs. My core is self-hosted n8n in a hybrid low-code/no-code + Python/API approach. Power Platform, Make, Zapier and CRM are complementary/contextual tools when another ecosystem calls for them; I do not present them at the same depth as my work with n8n, Python and APIs.
self-hosted n8n · low-code/no-code · BPMN · AS-IS/TO-BE · requirements/stakeholders · business rules · traceability · human approval · documentation · Power Platform/Make/Zapier/CRM (contextual use)
Produção Operacional, Proposta Comercial, ComprasVesper, HelpDesk and the Operational Procurement Catalog show automation beyond n8n, including desktop, document and backend systems.
View other projects ↗02
GENERATIVE AI AND AGENTS
AI as part of a controlled workflow.
I use LLM APIs, prompt engineering, structured outputs and context retrieval. In Postagem Redes, I implemented RAG/grounding with LangChain, Supabase and n8n/Docker, human review and reproducible offline evals for grounding, authorized sources and safe action. MCP and Microsoft Foundry also have hands-on validation through Microsoft Applied Skills for integrating MCP tools with agents; LangGraph and CrewAI remain study/prototype tools. I do not present these technologies at the same depth as my professional core in n8n, Python and APIs.
generative AI/LLMs · LLM APIs · prompts · structured outputs · RAG/grounding · LangChain · AI agents · human-in-the-loop · offline evals · MCP/Microsoft Foundry (Microsoft Applied Skills) · LangGraph/CrewAI (contextual use)
In Postagem Redes, AI helps produce drafts and review content before human approval. The workflow also separates results by channel and maintains a delivery history.
Open Postagem Redes ↗StudioCad, Vesper Manutenção, Infinity Engine and Hubora cover research, local knowledge, multimodal workflows, media generation and interfaces for non-technical users.
Open StudioCad ↗03
INTEGRATIONS AND APIS
Different systems connected through clear contracts.
I work with REST APIs, webhooks, HTTP/JSON, OAuth 2.0, SMTP/IMAP and third-party integrations. I keep credentials out of source code, handle external limits and record the individual result of each call.
REST APIs · webhooks · HTTP/JSON · OAuth 2.0 · SMTP/IMAP · Meta Graph API · Evolution API/WPPConnect · Supabase · Netlify Functions
Mala Direta uses SMTP and webhooks; Postagem Redes uses Meta Graph API and OAuth2; Proposta Comercial combines IMAP/SMTP and document generation.
Open Proposta Comercial ↗The industrial websites use a Python backend, SMTP and CRM in the private production environment. WhatsApp notifications complement internal alerts through APIs and webhooks.
Open industrial websites ↗04
ENGINEERING, BACKEND AND DATA
Complete applications, persistence and data pipelines.
I build with Python, JavaScript/TypeScript and FastAPI. I use SQL, PostgreSQL, SQLite/FTS5, Docker, Linux and Git/GitHub Actions. During the Compass Program, I worked with ETL/Data Lake, S3, Lambda, Glue/PySpark, Parquet, Athena and QuickSight.
Python · JavaScript/TypeScript · FastAPI · SQL · PostgreSQL · SQLite FTS5 · Docker · Linux · AWS/PySpark · Git/GitHub Actions · CI/CD
The Operational Procurement Catalog uses FastAPI, versioned JSON, SQLite FTS5, revision control and backups to organize 24 categories and 480+ material codes.
Open Procurement Catalog ↗Ten Compass Program sprints covered CSV/TMDB API ingestion, S3, Lambda/boto3, Glue/PySpark, Parquet, Raw/Trusted/Refined layers, Athena and QuickSight.
Open Compass Program ↗05
TRACEABILITY, RELIABILITY AND SECURITY
Failures treated as part of the system.
I use history, audit trails, change control, logs/monitoring, troubleshooting, error handling, retries, idempotency, backups, validation, failure isolation and secret management. In Quality and maintenance processes, evidence and responsible users remain traceable without overwriting previous executions.
traceability · auditing · logs/monitoring · troubleshooting · error handling · retries · idempotency · backups · failure isolation · integration security · secrets management · RLS · sanitization
In Mala Direta, cancellation is revalidated before every recipient. In Postagem Redes, failures are isolated by channel. In Produção Operacional, local cache and read-only NAS access help preserve continuity.
Open Produção Operacional ↗Portal uses tenant/RLS, Action Envelopes, approvals, auditing and a transactional outbox. The product remains under development and revalidation before a pilot.
Open Portal ↗06
PRODUCT, DEPLOYMENT AND SUPPORT
End-to-end delivery with direct user contact.
I build projects from the initial need, present demos, record feedback, install, configure and train people to use them. I then monitor errors and improvements until the solution becomes stable in the daily routine.
discovery · requirements · UX for non-technical users · user testing · deployment · training · documentation · monitoring · support
I deployed Produção Operacional to 10+ computers and one TV, supporting 20+ professionals across nine areas, and HelpDesk for 11 users.
Open HelpDesk ↗I have trained and guided 30+ people across office, factory and remote settings, including AnyDesk installations on computers outside the company.
View experience ↗NEXT STEP
View the projects or download the resume.
The resume summarizes my experience. The cases explain the problem, decisions, technologies, result and current state.