Detlef Tietze Author

Stefan Aichbauer is Managing Partner at H&Z having both accompanied and driven H&Z on its growth path. While his duties include a broad range of responsibilities, his passion is on transformation and sustainability – combined they are the major challenge most corporates will face in the decade to come.

Martina Buchhauser is a global leader with a deep understanding of the automotive industry and its transformation to new technologies and a responsible and CO₂-reduced business. She is a non-executive director of various advisory boards and a senior advisor of boutique consulting firm, H&Z, specialized in strategy, procurement, and sustainability.

Agnes Erben is Partner at H&Z and manages projects to professionalize procurement organizations. Agnes started her professional career as a strategic purchaser for production material at MTU Aero Engines. There she got to know strategic, tactical and operational challenges as well as her passion for procurement.

Sven Steinertis Project Manager at H&Z with focus on supporting companies to shape a sustainable tomorrow. Prior to consulting, Sven was part of the business development team for renewable energy fairs at Messe Düsseldorf GmbH. Sven sees sustainability as the essence to gain long-term competitive advantage and defines Procurement as the key contributor.

Dr. Detlef Tietze is Partner at H&Z and responsible for the Sustainability Practice. He started in banking, but quickly moved to the consulting space. Today, he supports companies to build Sustainability strategies, to develop measures to deliver to the targets and to anchor Sustainability in all aspects of the operating model.

Emilia Wiking is Project Manager at H&Z with a focus on procurement and sustainability topics. As a Swedish national, the sustainability mindset has been present since early days, she is dedicated to helping companies improve their procurement practices in a sustainable way through her work at H&Z where she is a member of both the procurement and sustainability practice.