JoséZechel
PT Contact

portfolio

Portfolio

Selected cases focused on scale, availability, governance and measurable return.

portfolio

Projects where operations mattered more than the demo

Selected cases focused on scale, availability, governance and measurable return.

MercuryGate - International logistics (TMS) Completed

Migration of ~80 Oracle RAC environments to PostgreSQL RDS on AWS

Work on a large-scale migration from Oracle RAC to open-source PostgreSQL on AWS RDS, with minimal downtime per environment. Scope included migration strategies, POCs, training, validation processes and documentation for the internal team.

  • ~80 Oracle RAC environments migrated
  • ~100TB+ of combined data
  • Thousands of dollars saved in annual Oracle licenses
  • Minimal downtime per cutover
Oracle RACPostgreSQL RDSAWS DMS/SCTora2pgPL/SQL -> PL/pgSQL
Multiple clients - Brazil In production

AI support agents at scale

Design and deployment of conversational AI agents for companies that need to scale support without losing quality, with real guardrails, internal integrations and full auditability.

  • ~90% support efficiency gain
  • Legacy and proprietary API integration
  • Auditable state machines
  • Guardrails for critical calculations
PythonLangGraphGeminiGPT-4oClaudePGVectorWhatsApp
Companies with internal knowledge bases In production

RAG and RLM for corporate knowledge access

RAG and RLM projects that give teams natural and secure access to documents, policies, contracts, technical bases and internal knowledge usually buried in folders and systems.

  • Semantic indexing of heterogeneous corporate sources
  • Data governance with team-level permissions
  • Deployment on Google Cloud Platform
  • Continuous ingestion pipelines
PGVectorGoogle Cloud PlatformLangChainLangGraphVertex AI

courses

Technical content for people who need to execute

YOUTUBEFREEPT-BR

PostgreSQL from Zero

A complete PostgreSQL course for people who want to master one of the most respected open-source databases.

PostgreSQL 16, advanced SQL, performance, backup/restore

2K+ students - 40+ lessons - published in 2024 Watch on YouTube
IN PRODUCTION2026

AI Agents in Practice

Building AI agents from scratch to production deployment, focused on real Brazilian business cases with Gemini, OpenAI and Claude.

Python, LangChain, LangGraph, Gemini, GPT-4o, Claude

Expected launch: Q3 2026
IN PRODUCTION2026

Automation with Make and n8n

From basics to advanced no-code/low-code automation for Brazilian professionals, with real cases and API integrations.

Make.com, n8n, webhooks, Brazilian APIs

Expected launch: Q4 2026

talks

Talks and presentations

2025 - MAR

Applied AI for SMBs: from hype to results

Technology event for Brazilian companies - Sao Paulo

SLIDES
2024 - NOV

Intelligent automation in law firms

Panel on digital transformation in legal operations - Online

VIDEO
2024 - AUG

SLM vs LLM: choosing the right model

Generative AI technical meetup - Belo Horizonte

SLIDES

contact

Does your company have a real problem?

I work with companies from any industry facing real problems involving Data and Artificial Intelligence, from bottlenecks that block growth to inefficiencies that limit operations. I work through Brasys, my consulting company, with one-off or recurring projects in Portuguese or English.

Schedule 30 minutes WhatsApp