„Jester has been accompanying us from the very beginning of our transformation journey. Their involvement spans planning, collaboration, motivation, and implementation. The professional and invigorating approach to teamwork aligns well with our ethos, and we appreciate the straightforward and candid exchanges. We have now established a new and more efficient organizational structure, along with fresh corporate values that are both embraced and cherished. Our heartfelt thanks for this remarkable journey! “

Marco Zanolari / Group CEO / The living Circle

"Working with Jester enables us to understand better and to take an active role in order to really take the necessary steps. I consider an outside view from a professional who reflects the organisation both logically and from the human side to be very valuable. Working with the Jester team is also a lot of fun - we can feel the energy in the teams and among the managers. Things are moving and that really motivates me as Clinic Director!"

Robert Koch / CEO / Zentralklinik Bad Berka (Rhön-Klinikum AG)

"“Jester understood us within a very short time and recognised our issues. They always responded to the unique dynamics of our workshops. They taught us psychological models that we can no longer imagine our everyday working lives without, and they always managed to challenge us. We were met with a great deal of humanity, empathy and love during and after the workshops - and this also brought us closer together as a team. Many thanks for that!”

Dominique Jäggi / Director / Hirslanden Klinik im Park

"Jester has been a key contributor to our transformation process for several years. Their focus on cultural transformation and team development has significantly enhanced our leadership team's alignment. Their workshops provide a solid foundation for effectively implementing our strategy and driving organizational progress.”

Patrick Bundeli / CEO / Intersport Switzerland

"“The training for our managers by Jester Advisory was extremely exciting and enriching. We recognized blind spots in our understanding of leadership and tackled them together. Jester's practice-orientated approaches have given us a lasting boost for the demands of day-to-day management.”

Hanspeter Stricker / CFO / Rhan AG

"Jester was critical in setting up the high-performance culture of our young tech startup (ETH Zurich Spin-off). Jim Siermann, our transformation consultant, helped our engineering and technical minds to appreciate the soft skills which we rarely focus on but have been shown to be critical in growing a young company where trust, communication, and feedback are important elements of success. We did several workshops with the founder team and also the first ten hires which set us up for success. Jester’s insights are very helpful and should be considered as part of team building and due diligence processes of tech startups.

Dr. Evan Petkov / Co-Founder & CEO / Optiml