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Strategic leaders

TrustBuilder’s single biggest asset is its people. From passionate developers to a driven management team, our combined efforts make us the most flexible and reliable solutions provider on the IAM market today. Meet some of the faces responsible for our success.

Lionel Chmilewsky – President and Chief Executive Officer

Lionel Chmilewsky is an accomplished industry leader with more than 15 years of CEO experience in running international companies in the Technology, Software and Cybersecurity domains. Prior to joining TrustBuilder, Lionel was CEO of Corero, a London Stock Exchange listed Cybersecurity company. Before that, Lionel served as CEO of Comverse IP Communications and as CEO of Cambridge Broadband Networks.

Xavier Lefaucheux – Chief Revenue Officer

Xavier Lefaucheux, with extensive Cybersecurity expertise, joined the executive team in 2023. He significantly influenced Telindus, Infovista, Stormshield, and WALLIX in Europe. His journey began in a major international services group, leading to a consulting role at Arche Communications, then to expanding InfoVista’s international sales. As Juniper Networks’ Sales Director, he directed global industry operations. At WALLIX Group, he was Vice-President of Sales, formulating strategic plans. Earlier, as Regional Director at Stormshield, he steered French operations and the formation of Stormshield within the Airbus group. Xavier holds an MBA from HEC.

Sébastien Larvor – CFO

In 2020, Sébastien Larvor transitioned to the tech industry after a dynamic career spanning textiles, oenology, and chemistry. Holding roles as CFO or General Manager in diverse organizations, from startups to major corporations, his extensive international exposure cultivated skills in intercultural management, organizational transformation, crisis management, financial leadership and cash management. A graduate of ESCP Business School, Sébastien enriches his diverse professional background with creative pursuits, writing and performing sketches and plays in French, Italian, and Turkish during his leisure hours.

Jean-Dominique Quien – CMO

Jean-Dominique Quien is a B2B marketing and digital communication expert with over 25 years’ experience in SaaS, cybersecurity, media monitoring, and reputation products and services. As a CMO, Jean-Dominique has a keen eye on how technology in general, and emerging technologies in particular, can assist marketing in driving business growth and delivering results.


Sophie Semeria Thomas – General Secretary

Sophie Semeria Thomas is the General Secretary at TrustBuilder, where she oversees HR, Legal Counsel, and the company’s Corporate Social Responsibility (CSR) strategy. Before joining TrustBuilder, Sophie began her career as a lawyer in international law firms. She then went on to work in consultancy and IT companies, holding various positions such as HR- and Legal Director.

Chakib Benyakhlef – Senior VP R&D

Chakib Benyakhlef is an experienced software engineering leader with a proven track record of successfully delivering cutting-edge SaaS solutions. His expertise lies in robust technical proficiency, particularly in scalable and highly available distributed systems. Recognized for his adept people management skills, Chakib has extensive experience in building and leading talented engineering teams. Before joining TrustBuilder in 2022, he served as the head of the software engineering department at Assima in the e-learning industry.

Carlo Schupp – VP Technology Strategy & Alliances

Carlo Schupp stands as a distinguished thought leader in identity-driven digital transformation. With a pioneering approach rooted in asset-based consulting, Carlo has orchestrated and steered transformative journeys at global organizations, instilling a culture of positivity and proactivity primed for innovation. In 2021, Carlo brought his wealth of expertise to TrustBuilder, where he assumed a pivotal role in shaping the company’s vision and direction. Prior to joining TrustBuilder, he founded and led his own identity and access management product company. Before venturing into entrepreneurship, Carlo served as the European Practice Leader for Deloitte’s Security & Privacy Services, guiding global organizations into their cybersecurity transformation ventures.