In this session, Marc Siefert (Silberpuls) and Lennart Zellmer (elvah) take you behind the scenes of their 2.5-year collaboration on the development of elvah’s app. They will dive into the advantages and challenges of using an external UX/UI design agency versus building an in-house team or hiring freelancers. From the flexibility and specialized expertise that Silberpuls brought to the table, to the complexities of coordination and alignment, you will gain insights into how design as a service shaped elvah’s product journey — and the lessons learned along the way. Whether you are considering outsourcing or building an internal team, this talk will provide a clear look at the pros and cons of each approach.
Director Product & UX at Silberpuls.
Marc Siefert is Director Product & UX at Silberpuls GmbH & Co KG, shaping how digital products are built by transforming complex flows into intuitive experiences. With over 8 years of UX expertise, Marc has led teams and worked across various industries. At Deichmann, he led the UX relaunch of global online shops and the app, introducing key UX principles and closely collaborating with Product Management and Development.
Senior Product Owner at elvah.
Lennart Zellmer is the Senior Product Owner at elvah GmbH, a company specializing in electric vehicle charging software solutions. With a decade of experience in front-end development and UI/UX design, Lennart brings a unique blend of technical expertise and product management skills to his role. At elvah, he drives innovation in the rapidly evolving field of electric vehicle infrastructure, making charging more accessible and user-friendly.
