Databases
PostgreSQL
Oracle
MongoDB
MySQL
DynamoDB
Redis
RDSData and AI Consultant
José Zechel
Data and AI Specialist - Founder of Brasys
I help companies solve real problems with Data and Artificial Intelligence, the ones that block operations, are repetitive, cost money, or keep people awake. I create solutions that solve real pain points and run in production, not demos.
I deliver business process automation projects with Artificial Intelligence and Agents, creation and maintenance of data pipelines for BI, Analytics and DW, and consulting and support for critical production databases, including large-scale migrations, always supported by data governance and LGPD.Schedule a meeting
25+
years in IT
100+
managed environments
15+
AI projects
PT/EN/ES
languages
TECHNICAL DEPTH
Technologies I run in production
PostgreSQL
Oracle
MongoDB
MySQL
DynamoDB
Redis
RDSData Engineering
Databricks
Apache Airflow
ETL/ELT
dbt
Data Lake
SnowflakeBI & Analytics
Superset
Power BI
Metabase
BigQuery
ClickHouse
RedshiftInfrastructure & Observability
Linux
Docker
Kubernetes
Prometheus
Grafana
Zabbix
Ansible
eBPF
GitArtificial Intelligence
PGVector
LangGraph
RAG
RLM
LangChain
Claude
OpenAI
Gemini
Modelos open-source (Llama, Gemma)
Machine LearningCloud & Automation
AWS
Azure
GCP
Vertex AI
CI/CD (Jenkins · GitHub Actions)
Python
Shell
n8n
MLOps
GCP
Vertex AI
CI/CD (Jenkins · GitHub Actions)
Python
Shell
n8n
MLOpsservices
Four tracks for solving
real problems with Data and AI
I work where Data, AI and Infrastructure need to leave the discourse and deliver real results.
PostgreSQL & Databases
Support, performance tuning, migrations, upgrades, high availability and architecture for critical environments.
- PostgreSQL, MySQL, Oracle and MongoDB
- Disaster Recovery
- Business Continuity Strategy
Data Engineering & BI/Analytics
Modeling, data pipelines, DW and analytical layers that turn fragmented data into reliable decisions.
- Collection and extraction from multiple sources
- Data treatment and modeling
- Creation, orchestration, automation and maintenance of data pipelines
- Dashboards and analytical datasets
Data Governance & LGPD
Pragmatic governance, adequacy, permissions and traceability for corporate data and AI projects.
- Source and access mapping
- Retention and consent policies
- Governance for RAG and internal knowledge
Artificial Intelligence
Agentic Engineering with state machines, guardrails, auditability and integration with WhatsApp, internal APIs and legacy systems.
- RAG, RLM and PGVector
- LangGraph, Gemini, OpenAI, Claude and open-source models
- Automation with system integration
- Process improvement and automation
portfolio
Projects where operations mattered more than the demo
Selected cases focused on scale, availability, governance and measurable return.
Migration of ~80 Oracle RAC environments to PostgreSQL RDS
Work on a large-scale migration from Oracle RAC to PostgreSQL RDS, with minimal downtime per environment. Responsible for designing migration strategies, POCs, training, validation processes and documentation for the internal team.
- ~80 Oracle RAC environments migrated to PostgreSQL RDS
- ~100TB of combined data
- Thousands of dollars saved in annual Oracle licenses
- Minimal downtime per cutover
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.
- ~80% of interactions resolved without human intervention
- Legacy and proprietary API integration
- Auditable state machines
- Guardrails for critical calculations
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
courses
Technical content for people who need to execute
Beyond projects, I also produce technical content for people who need to execute.
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 YouTubeAI 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, OpenAI, Claude
Expected: Q3 2026Automation 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: Q4 2026about
Strong technical base, pragmatic focus
and production execution
I am the founder of Brasys, a consulting company specialized in Data and Artificial Intelligence applied to real business problems.
I work with companies from any industry when there is a real problem involving data, automation or AI. I do not sell generic digital transformation or technology hype: I focus on measurable return in a realistic timeframe.
My technical foundation is production databases: Oracle, PostgreSQL, MySQL and MongoDB, with almost two decades of experience in critical environments and large-scale migrations. In recent years I expanded that base into applied AI, RAG/RLM, data governance and cloud architecture across GCP, AWS and Azure.
I believe in radical simplicity: the best solution solves the problem with the minimum necessary complexity.
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.