AI Engineer
I design, ship and operate GenAI systems where errors are expensive.
I build AI systems for tax, legal, compliance and education teams. Every system I ship can show where its answers come from — and proves it with audit trails.
KPMGUniversity of São PauloUniversité Lumière Lyon 2Peer-reviewed author
AI Engineer
Leonardo Sá
Measured impactLet's talk
1,600+
Professionals trained
to use AI in their daily work
50,000
Documents read
every page of an $8B lawsuit — not a sample
30–80%
Less task time
on the tax workflows I automated
94%
Answer accuracy
validated by Legal and Corporate teams
What I do.
I build AI systems and run them in production. At KPMG Brazil, my systems cut task time by 30–80% on tax and compliance work. At Revisa Master, the company I co-founded, I built the entire review platform and I run it in production. Paying customers use it every day.
Read my full storyProcess Architecture
I turn messy processes into systems that run on their own.
Multi-Agent Systems
I build AI agents that check their answers and cite their sources.
AI Adoption
I train teams to use AI in their real work — not in slide decks.
Production Delivery
I take prototypes to production. They hold up.
Python
CrewAI
Django
JavaScript
Power Platform
Python
CrewAI
Django
JavaScript
Power Platform
Python
CrewAI
Django
JavaScript
Power Platform
Python
CrewAI
Django
JavaScript
Power Platform