Veltys

A consultant at Veltys since the firm was founded, Anne then became a partner, took charge of operations and became our CFO. A graduate of ENSAE and Sciences Po Paris, she is particularly skilled at resolving the most unlikely situations and at using Python. She wears 10 hats and handles 1,000 topics to help Veltys grow! She also holds administrative and financial positions within Kéa, the group to which Veltys belongs.

Arthur supports institutional stakeholders on the challenges of leveraging their data, whether through macro-level approaches (with the Health Data Hub, focusing on data business models) or through the direct monetization of databases and/or data assets (designing access points, supporting negotiations in industrial partnerships, and building models).

As Managing Director of Veltys, Arthur drives the firm's vision, development, and impact, orchestrating both commercial momentum and a mission-driven culture that fosters responsible transformation, as well as synergies with the Kéa group.

He is also the expert on health and energy issues. In particular, he has led, in conjunction with Regional Health Agencies (ARS) and the Directorate General for Healthcare Provision (DGOS), support missions for healthcare facilities in implementing the AFR (Activity-Based Recycling) chain. In this capacity, he has assisted approximately thirty facilities with the detailed analysis of their data. In the energy sector, he has worked with organizations such as Enedis and the International Energy Agency on their forecasting and simulation models.

A specialist in public policy evaluation and modeling, he works in this capacity with the DGOS (Directorate General for Healthcare Supply), the CNAM (National Health Insurance Fund), and research teams. He notably leads the Veltys/Kéa consortium for Article 51 evaluations for the French National Health Insurance system.

A graduate of ENS Cachan and ENSAE (National School of Economics and Management), Arthur completed a PhD in applied econometrics on health issues at the Paris School of Economics.

Before joining Veltys, Arthur worked for four years at the French Treasury, where he provided consulting and public policy evaluation services, focusing on public spending and then energy policy.

“All models are wrong, but some are useful.” – George Box

Philippe has a rare dual expertise in economics and data, which he leverages to help executives make informed strategic decisions. Convinced that data, when used effectively, can powerfully and sustainably transform business models, he combines analytical rigour, strategic foresight and technological innovation in every project he leads.

Philippe operates at the intersection where data intelligence becomes a differentiator — enabling robust decisions that drive sustainable growth.

Philippe is a key reference within the AI, Data, Digital & Technologies practice, where his expertise in data science, artificial intelligence and quantitative economic modelling is central. He supports client executive committees through data-driven transformations and AI adoption strategies, particularly in fast-evolving sectors (energy, sport, healthcare, media, finance…), with a strong focus on value creation, optimisation models, and regulation.

Holding a PhD in Industrial Economics and degrees from École Polytechnique and ENSAE, Philippe has built a distinguished academic career, including as Director of the Industrial Economics Laboratory at CREST and Visiting Researcher at the University of Chicago.

After 20 years dedicated to research, he has spent over 15 years in economic consulting, at the crossroads of regulation, applied econometrics and data strategy. He founded Veltys, a firm specialising in data intelligence and AI, in 2013. Philippe maintains strong ties with academia, continuing to co-author papers published in peer-reviewed journals and teaching at École Polytechnique Paris.

Philippe sits on the board of several innovative companies and works in complex international environments on projects with significant economic and technological dimensions. He has contributed to the creation of innovative platforms for leading industrial partners, with whom he has established joint ventures. He is also recognised for his work with major players in the sports industry, particularly in media rights commercialisation, combining strategic analysis, economic valuation and a deep understanding of market dynamics.

"Data and AI — both predictive and generative — have become central to the design and execution of corporate strategies. Together with the Kéa group, we have all the expertise needed to support our clients and rise to the tremendous challenges this brings."

Romain is an accomplished economist with over 20 years of experience. A graduate engineer from École Polytechnique and holding a PhD in Economics specialising in econometrics and impact evaluation, he brings to his clients and Veltys teams his technical mastery and sharp expertise, developed during his years at CREST and INSEE within the public statistical system.

As former Director of Studies at ENSAE, Romain is widely recognised for his pedagogical skills, demonstrated through many years of teaching statistics and econometrics at institutions including École Polytechnique, ENSAE, Sciences Po, Supélec and Albert School.

Unanimously regarded as a leading authority in machine learning, artificial intelligence, econometrics and modelling more broadly, he supports his clients with a Chief Scientific Officer mindset — applying his researcher's rigour to every consulting engagement. A lover of complex challenges, technical innovation and wordplay, he always has the right reference at the right moment.

A graduate of École Polytechnique and ENSAE, Romain earned his PhD in Economics from the École des Hautes Études en Sciences Sociales (EHESS), with a specialisation in applied econometrics. Feel free to engage him in a fascinating debate on sampling bias in machine learning algorithms — he won't shy away!

Vice-President of ENSAE Alumni, Romain continues to uphold the institution's motto:

"Making sense of data to evaluate, forecast and decide."

Julie joined Veltys with several years of experience in strategy and organisation consulting. She has an unmatched ability to lead projects from start to finish, her experience and background giving her a natural ease across both technical and strategic dimensions. She brings her full energy to supporting her clients and teams in reaching their highest potential.

Passionate about strategy, consulting and management, Julie also has a strong research streak — very much in the Veltys tradition. After earning her degree in Economics from Université Paris 1, she completed a PhD at the Economics Laboratory of École Polytechnique.

A Partner at the firm, Julie also heads the Industry practice.

Since 2013, Jean-Baptiste has been supporting major players in the sports industry, particularly leagues and federations, on economic, statistical and data challenges. He also leads Veltys' auction assignments, designing tender mechanisms and optimising operator responses, notably in hertzian spectrum, media rights and renewable energies.

He also works on pricing and marketing mix modelling (MMM) projects, drawing on his expertise in econometrics and statistical modelling. His scientific approach combined with strategic acumen allows him to make a real difference on complex, highly analytical subjects.

A graduate of Sciences Po and École Polytechnique, he holds a CIFRE PhD in applied econometrics and co-teaches part of the Master's course in Business Economics at École Polytechnique.

"Raw data won't solve your problems — asking the right questions will." — Stefaan Verhulst