Director
HEC Lausanne - EPFL

With a background in finance and data analysis, Leonard bridges business needs with technical solutions. He launched Arsene Data to help companies unlock value through clean, actionable analytics.

About Us

Arsene Data was born from a simple idea:

Companies don’t need more data
They need clarity.

After years working at the intersection of finance, strategy, Leonard Veillon saw how often valuable information was scattered, underused, or simply too complex to act on. So he started Arsene Data with one goal: to turn complexity into something useful.

Today, we help businesses — from nimble startups to global players — make better decisions by transforming their data into insights they can trust. We work hands-on, ask the right questions, and build solutions that actually serve the people using them.

Whether it’s building a dashboard, analyzing a market, or automating a process, we focus on what matters: clarity, speed, and impact.