This strategic hire aims at accelerating WeeFin’s international expansion. Before joining WeeFin, Matthias Breier served as ESG Product Manager at CSSP, an ESG reporting firm based in Liechtenstein. He then became Head of Product for regulatory reporting at FE fundinfo, a European financial data provider. He holds a PhD in business model innovation from Lappeenranta University in Finland.
In his role, Matthias Breier will be responsible for growing the product team, defining the development roadmap for WeeFin's platform, and creating the strategy for product deployment across Europe. This strategic hire aims at accelerating WeeFin’s international pansion. Before joining WeeFin, Matthias Breier served as ESG Product Manager at CSSP, an ESG reporting firm based in Liechtenstein. He then became Head of Product for regulatory reporting at FE fundinfo, a European financial data provider. He holds a PhD in business model innovation from Lappeenranta University in Finland. In his new role, Matthias Breier will be responsible for growing the product team, defining the roadmap of WeeFin’s platform, and unfolding its strategy across Europe.
“I am delighted to join the WeeFin team at such a pivotal moment in its development. With my experience in both ESG and the European market, my ambition is to strengthen WeeFin's position across the continent by making its platform absolutely essential for all financial players” states Matthias Breier, Chief Product Officer at WeeFin.
Formerly Head of Human Resources at WWF, Julie Truong joined WeeFin in 2022 as Head of Human Resources. She has played a key role in cultivating a positive internal culture and shaping a strong employer brand.
As WeeFin transitioned to a mission-driven company, her expertise has supported the fintech’s exponential growth—its workforce has quadrupled since her arrival, now reaching nearly 100 employees, most of them working remotely. She now naturally joins WeeFin’s management committee, a gender-balanced team of six members.
This appointment reflects the company’s commitment to building a sustainable model at every stage of its growth, especially as its international expansion continues.
“We are delighted to welcome Matthias, whose dual expertise in product and ESG will be a valuable asset to WeeFin during this phase of growth. His in-depth understanding of the challenges and the international market will actively contribute to strengthening our leadership position. Appointing Julie, whose work and commitment have been exemplary since she joined, to the management committee is both a strategic and a natural step: it reflects our commitment to firmly anchoring the values that define WeeFin» comments Marion Aubert, cofounder of WeeFin and Head of UK.
About WeeFin
Founded in 2018 by former banking and finance professionals, WeeFin is a mission-driven company that helps financial institutions implement more ambitious sustainability strategies. It centralizes the entire ESG process—including data collection, reporting, indicator calculation, commitment tracking, and regulatory updates—on a fully modular platform that adapts to each client’s investment strategy. Now a key player in the industry, the company serves over 40 clients across Europe, representing €6.9 trillion in assets. WeeFin is part of the Impact 40 by Mouvement Impact France, which identifies future impact unicorns, and is listed in the Fintech 100 2025 ranking.
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