Fabian is responsible for the architecture of the technology framework. He supported the development of Zalando and was the architect of both the Alice & Bob framework by Rocket Internet and its evolutionary successor Yves & Zed by Project A Ventures, which is used as the foundation of Spryker Systems. Under his technical guidance, dozens of leading e-commerce business models worldwide have been brought to life, including dafiti.com.br, lamoda.ru and tirendo.de.