Program committee

Emmanuel is Java Champion, Senior Distinguished Engineer and Chief Architect Application Services and Middleware at Red Hat. His work is Open Source. He is known for his contributions to and leadership of the Quarkus and Hibernate projects, as well as his contributions to Java standards.

He speaks regularly at conferences and JUGs including JavaOne, Red Hat Summit and Devoxx. He hosts a number of podcasts, including Les Cast Codeurs.

You can follow him on BlueSky at @emmanuelbernard.com or on twitter at @emmanuelbernard.

#kafka #quarkus #debezium #infinispan #hibernate-orm #hibernate-search #hibernate-validator #hibernate-ogm #ceylon #JPA #bean-validation #lescastcodeurs

Sylvain Corlay is the founder and chairman of QuantStack, a company specialising in open-source software for scientific computing.

As an open-source developer, Sylvain is very active in the free scientific computing ecosystem, particularly in the Jupyter project, as well as in the conda-forge and xtensor projects. In 2018, he and the other members of the Jupyter leadership were honoured with the ACM Software System Award.

Beyond QuantStack, Sylvain is very involved in the community. He was a board member of the NumFOCUS foundation from 2018 to 2024, organised the JupyterCon 2023 conference in Paris, and has been coordinating the PyData community in Paris since 2017, as organiser of the PyData meetup group and conference in 2024 and 2025.

Creator of XWiki and CEO of XWiki SAS, Ludovic I’m the gentle organizer of the XWiki SAS company for now 20 years.

XWiki SAS, a European company based in France and Romania, only building free & open-source software leads the development of the XWiki Software used by thousands of organizations and helps companies and organizations all over the world organize, share, and collaborate on content. XWiki also leads the development of CryptPad (https://cryptpad.org), the E2EE Real-time Collaborative Suite.

I’ve been a speaker at various events including Paris Open Source Experience, FOSDEM, OW2 Conference, JDLL, Capitole du Libre, speaking about Collaboration Software, Financing FLOSS software and Privacy Solutions.

I’m also member of the OpenFoodFacts board.

Peter Ganten is founder and CEO of Univention GmbH, which enables organizations and individuals to control, innovate and customize their IT systems to  meet their individual needs with the help of open source software. He is also the chairman of the board of the Open Source Business Alliance – the German industry association for open-source businesses – and co-founder and board member of APELL, the European umbrella organization of open source industry associations. His expertise is frequently sought when it comes to advising politicians and administrators, companies and civil society on achieving digital sovereignty through open source solutions.

Tobie Langel is a world-leading expert on open source and standardization. He advises some of the biggest names in tech (Google, Microsoft, Mozilla, Intel, Cisco), promising startups (Airtable, GitLab, Postman), industry organizations (OpenJS Foundation, OASIS Open, W3C, Eclipse Foundation) and nonprofits (Ushahidi, Omidyar Network), pro bono or through his consultancy, UnlockOpen.
Tobie’s unique mix of deep technical expertise, open source and standardization street creds, thorough understanding of IP concerns, industry-wide network, and broad, business-focused strategic perspective makes him an ideal partner when growing thriving open ecosystems that balance private and public interests in pursuit of the common good.
Tobie is the technical lead for the Eclipse Foundation’s Open Regulatory Compliance (ORC) Working Group which he represents at the European Commission’s CRA Expert Group.”

In 2003, Veronika Mazour-Mestrallet co-founded eXo Platform, a French publisher specialising in open-source intranet and digital workplace solutions. In June 2022, she was appointed CEO of the company, with the ambition of offering an open-source, sovereign alternative to Microsoft 365.

Veronika Mazour-Mestrallet began her career as a private equity analyst at Goldman Sachs. She then joined the general inspection department of BNP Paribas, before moving to the Paris office of Boston Consulting Group (BCG). In 2009, she decided to invest fully in eXo Platform by taking on the role of Chief Financial Officer, a position she also held within the Codenvy spin-off from 2012 to 2015. Thereafter, she managed eXo Platform’s operations until 2022, when she became CEO.

Open source, synonymous with transparency, mutual aid and collaboration, is at the heart of eXo Platform’s founding principles and has always guided Veronika’s career path. With eXo Platform, she aims to build a more sustainable, responsible, free and high-performance digital future.

Emily Omier is works with open source companies to clarify the roadmap for project and product, how the project fits into their business strategy and how to build a growth flywheel that optimizes the relationship between project and product. She’s the co-founder of Open Source Founders Summit, a conference for founders of open source companies, and host of The Business of Open Source.

Yannick Seiller has been working for over ten years to develop and distribute open source solutions in France. Since 2012, he has headed FactorFX, a hybrid company that both publishes and integrates open source solutions, including OCS Inventory, the asset management tool widely used in the public sector. In 2024, he became Director of Open Source Experts, affirming his commitment to digital sovereignty based on transparency, expertise and collaborative innovation.