"I have known and valued Justus for 25 years, since a scholarship that took us both to the United States. He meets challenges with a playful kind of joy and people with real interest, and I know no one else in whom high standards, precision, capability and lightness come together so naturally. What I value most is his honesty, his reliability and his gift for turning a question over and looking at it from every side. His clarity and the way he meets people make every conversation with him a gift."

"Justus and I have known each other for 20 years, from studying together. Whatever he takes on, he gets done with infectious energy, passion and a doer's mindset. He combines creativity and an eye for design with the right words, thinks laterally and brings complex matters to the point. Justus listens closely, gives you his honest opinion and is an absolutely reliable partner, both in a team and in delivering work independently."

"Working personally with Justus over multiple years gave me direct insight and experience of the breadth and depth of his ability. From organisational leadership to end-to-end brand creative, I couldn't recommend his services more highly."

"We got to know each other through the joint project "Die Macherei München". Justus Rehn later brought me in for a project of his own. What I particularly appreciate about him is his great commitment and his aspiration to truly achieve the best possible result. With his pronounced sense of design and great love of detail, work is produced at a very high level — and the collaboration is always pleasant and straightforward.

"Justus is one of those people who bring positive energy, curiosity, and genuine interest in others from the very first moment you meet him. His enthusiasm is contagious, and his eye for detail is impressive—both in front of and behind the camera. I experienced Justus as someone who doesn’t just do his job, but truly burns for what he does."

"I've known Justus for more than 20 years, both professionally and personally. He combines strategic thinking with creativity, never settling for obvious solutions, and always operates with professionalism and a strong sense of integrity. Over the years we've been able to rely on each other in business and in life. That kind of trust comes from consistency, reliability, and character, and Justus brings all three to everything he does."

"Justus' ability to create art with pragmatism is second to none. He understands how images and colour come together to identify a company's brand. Having worked with and seen many designers I can say with confidence that Justus is top tier - without the attitude!