JoséZechel
PT Contact

services

Services

I work where data, infrastructure and AI need to leave the slide deck and run in production.

services

Four tracks for solving real data problems

I work where data, infrastructure and AI need to leave the slide deck and run in production.

PostgreSQL and databases

Diagnostics, tuning, migrations and architecture for critical environments across Oracle, PostgreSQL, MySQL, MongoDB and SQL Server.

  • Oracle RAC to PostgreSQL migrations
  • PostgreSQL upgrades from 9.2 to 17
  • Performance, backup, HA and troubleshooting

BI and Analytics

Modeling, pipelines and analytical layers that turn fragmented data into reliable decisions.

  • Metric governance
  • Dashboards and analytical datasets
  • Ingestion and update pipelines

Data Governance and LGPD/GDPR

Pragmatic governance, permissions and traceability for corporate data and AI projects.

  • Source and access mapping
  • Retention and consent policies
  • Governance for RAG and internal knowledge

Agentic Engineering

AI agents with state machines, guardrails, auditability and integration with real channels such as WhatsApp, web chat and internal APIs.

  • RAG, RLM and PGVector
  • LangGraph, Gemini, GPT-4o and Claude
  • Business system automation

Real case - database migration at scale

How we migrated 80 Oracle RAC environments to PostgreSQL on AWS

~100TB combined, minimal downtime and thousands of dollars saved in Oracle RAC licenses.

  1. 01

    Oracle RAC on AWS RDS

    ~80 environments

  2. 02

    Compatibility analysis

    ora2pg, custom scripts, AWS SCT, AWS DMS

  3. 03

    Schema conversion

    PL/SQL to PL/pgSQL with automation and manual review

  4. 04

    Replication and cutover

    AWS DMS with controlled windows

  5. 05

    PostgreSQL on AWS RDS

    Multi-region target

Minimal downtime per environment - Functional parity validation before cutover - POCs and processes documented for the internal team

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