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Case studies · 2024–2026

Selected work.

Eight projects with real, measured results. The first four are the ones I'm proudest of — scroll to walk through them.

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01
engineering

Revisa Express

Professors are overloaded, so students wait weeks for feedback. My platform delivers an expert-level review in fifteen minutes.

80% Less Analysis TimePythonDjangoCrewAIChromaDB
02
engineering

Document Analysis Automation

An $8 billion lawsuit's evidence sat in 50,000 scanned documents. My pipeline read every page — and lawyers validated what it found.

Every Page of 50,000+ DocsPythonPower AutomateAI BuilderAzure Document Intelligence
03
engineering

KBSE: Knowledge Base Search Engine

A search engine that answers legal and regulatory questions — and links every answer to its original source.

94% Answer AccuracyPythonDjangoCrewAIChromaDB
04
AI Adoption

Tax Reform Delivery Model

Brazil's largest tax reform had no ready-made delivery model. I helped build one with AI inside the workflow.

30-60% Efficiency GainService DesignAI AgentsProcess Mapping

More projects

Building AI that has to work every time? Let's talk.

leonardo@leonardosa.pro

Madrid, Spain · from August 2026 · English / French / Portuguese / Spanish

© 2026 Leonardo Costa de Sá