Our core experts team

Our sustainability experts develop the strategies today that your company will need tomorrow.

Keen to progress instead of staying where you are? Then contact our Consulting Team and shape your sustainable future with us!

After completing two degrees in materials science and physics, Anne-Claire began her career as a manager specializing in automotive engineering. For over 22 years, she and her teams have been supporting OEMs and their suppliers in meeting legal requirements. Her focus is on topics such as material compliance, the use of sustainable materials or components and the implementation of life cycle analyses to record environmental impacts.

“As your partner for sustainability transformation, our mission is to work with you to develop innovative solutions that not only protect your business, but also our planet for future generations.”
Anne-Claire Höppner

As Vice President Anne-Claire set up ARRK Sustainability Consulting Services and is responsible for business development to support companies in their sustainable transformation. In addition to her role as project manager, she is also a trainer in the project management office and a certified sustainability manager.

After completing his MBA in sustainability management, Jens gained experience in innovation management and supported companies in targeted and structured product development. This work often crossed the boundaries of internal business development - a subject area that also plays a central role in his current position at ARRK Engineering GmbH.

“The circular economy means keeping an eye on the entire life cycle of a product - not only recycling, but also production and service life offer decisive approaches to sustainability.”
Jens Ramsbrock

As a Certified Sustainability Reporting Specialist with a focus on CSRD, Jens now works as a Technical Supervisor. In this role, he is responsible for the development of business strategies and consulting services.

Kesheng is a certified project manager and ESG analyst with 18 years of cross-industry experience in real estate, renewable energy, agriculture and science. His international expertise in sustainability management includes projects in Europe and Asia, particularly in China, with a focus on energy policy development.

“Sustainability in companies requires global perspectives and local expertise. Those who combine the dynamics in Europe and China create sustainable solutions for international markets.”
Dr. Kesheng Shu

He has extensive knowledge of ESG reporting standards for both the EU market (SDG, GRI, IFRS, ESRS) and the Chinese market (CASS-ESG, HKEX-ESG). Kesheng's project management expertise spans traditional and agile methodologies with a focus on CSRD compliance and GHG accounting. Thanks to his deep roots in academic research on sustainability, he actively contributes to trend analysis. The team benefits from his expertise with a special focus on the Chinese market.

Alexander has a degree in automotive engineering, is trained as a Business Transformation Coach (univ.) and earned an additional qualification as a certified sustainability consultant. Over many years, he gained extensive experience in operating large commercial vehicle fleets and specialized in the sustainable transformation of fleet management.

“Sustainable transformation requires more than just change. It begins with the ability to manage innovation in a targeted manner and to rethink resources in the long term.”
Alexander Roas

As part of our expert team, he currently specializes in leading CSRD projects.

Oliver has been working on sustainability issues for over 25 years. He acquired his sound theoretical knowledge through a degree in biology with a focus on ecology and an MBA in sustainability management.  

“Sustainability requires knowledge, experience and foresight. This is the only way to create future-proof solutions.”
Oliver Rüter

He initially gained practical experience in environmental and sustainability consulting. He then worked for ten years as a sustainability analyst at an international rating agency, where he was responsible for the chemicals and pharmaceuticals sector. In his current role at ARRK, his focus is also on internal sustainability management.