Stefan Vaillant is a seasoned technology leader and CTO with three decades of enterprise software experience and a track record of scaling startups into market-leading platforms. As co-founder and long-time architect of Cumulocity IoT, he helped grow the company to Gartner-recognized leadership and later shepherded its technology direction within Software AG. He combines product management, sales-aligned architecture, and delivery expertise to ensure products implement business strategy quickly and efficiently across international teams. His background spans hands-on engineering through executive roles at Nokia Siemens Networks, blending deep systems architecture with commercial product thinking. Based in the Cologne/Bonn region, he is known for aligning cross-product architectures and evangelizing technology to drive business outcomes. An understated strength is his ability to move between startup agility and large-scale enterprise coordination, preserving speed without sacrificing governance.
11 years of coding experience
36 years of employment as a software developer
Master Computer Science, Master Computer Science at RWTH Aachen University
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Stefan Vaillant - Chief Technology Officer at Cumulocity