Ralf Ackermann

Division Lead · Transport & Logistics · Germany

"The core challenge in our project was aligning internal teams and external partners around a shared objective. One of Jonas’ standout qualities is his ability to listen, synthesize, and unite stakeholders in a solution-oriented way. He takes full ownership and leads from within. Jonas quickly grasped the complexity of the situation and showed an exceptional understanding of commercially driven operational needs and their IT implications. His positive presence and active engagement helped lower resistance, cut through complexity, and significantly reaccelerate project momentum – all while keeping us on budget. A truly valuable and respectful collaboration. We’d gladly work with him again."

Michael Labuschewski

Division Lead · Automotive · Germany

"The resolution of a critical quality issue involved numerous stakeholders across different levels and organizations, making coordination increasingly challenging – particularly with the OEM. Jonas played a key role in de-escalating the situation thanks to his recognized standing and experience, while also expanding our problem-solving approach with a valuable outside perspective. Collaboration was clear, focused, and at all times on equal footing. I recommend Jonas especially for complex customer situations and projects requiring stabilization – where subject-matter expertise must go hand in hand with communication skills, diplomacy, and the ability to act as a trusted and neutral intermediary."

Claude Schnider

C-Level · Technology (TMT) · Switzerland

"Working with Jonas was highly professional and genuinely rewarding. He brought deep expertise and a broad knowledge base, reflected in the clarity and structure of the concepts he developed. His professional approach and strong personal commitment were key contributors to the success of our project."

Michael Sosna

Division Lead · Telecommunications (TMT) · Germany

"Jonas took over a central program in a particularly challenging phase - with high visibility at top management level and clear expectations for progress and impact. He quickly assumed responsibility, structured the complex setup, and established a clear steering logic that significantly improved decision-making and execution speed. What impressed me most was his combination of strategic foresight and operational implementation strength. Jonas has a deep understanding of the issues, thinks in terms of impact logic, and is consistently solution-oriented. In our collaboration, he was a reliable sparring partner at eye level - clear in his communication, committed in his actions, and with a leadership style that engages and empowers teams. I would gladly work with him again anytime."

Markus Vieler

C-Level · Retail & Consumer · Germany

"Our challenge was to approach the Amazon marketplace in a more analytical and efficient way, while at the same time transforming from a no-name business into a brand-led organization. Drawing on his deep knowledge of marketplace dynamics, Jonas quickly defined KPIs as effective steering tools for our e-commerce team – giving the project immediate traction. His direct, no-nonsense, and solution-oriented communication resonated with everyone involved. Thanks to his contribution, we significantly accelerated both our brand transformation and our e-commerce growth."

Andre Reifenrath

C-Level · Technology (TMT) · Germany

"Jonas consistently impressed me throughout our work on a major IT project with his unwavering honesty and lasting clarity. Many can manage projects – but few can communicate the truth clearly, consistently, and in an understandable and comprehensible way that truly resonates."

Paul Rottstegge

Division Lead · Technology (TMT) · Germany

"Jonas was a critical success factor in the implementation of our onsite ad server. With his support, we professionalized collaboration across a wide range of stakeholders, reliably managed tight deadlines, and initiated necessary escalations with precision. I can fully recommend Jonas for complex projects at the intersection of business goals, technology, and transformation."