Anne Westphal

Senior Manager

Anne has 10 years of experience in project and program management of complex transformation projects in large, medium-sized as well as the corporate environment. What clients appreciate most about her is the assumption of responsibility as well as her structural approach and commitment.

Martin Orthen

Founder & CEO

Clients have described Martin as an inspiring leader thriving innovative Business Models in a pragmatic and client-focused way. Martin’s creative yet strategic mindset helps to create out-of-the-box solutions that are beneficial for his clients.

Celina Rerop

Junior Consultant

Clients experience Celina as a focused personality with a hands-on mentality. Even in stressful situations, Celina keeps a calm head and works in a results-oriented manner. Celina embraces new challenges and her skills and experience benefit her clients immensely.

Michael Steiner

Junior Consultant

With his strong imagination and communication skills, Michael finds creative solutions even in challenging situations. He always keeps the bigger picture in mind, ensuring that everyone involved can leverage their strengths to achieve the best possible outcomes—true to the motto: "Plan solutions, not problems."

Matthias Kreuzer

Consultant

With his process-oriented approach, Matthias always finds holistic solutions. His structured way of working and effective communication ensure continuous progress in projects. Thanks to his background in supply chain management, he always keeps calm in stressful situations.

Mike Betts

Director

Mike brings international C-Level experience in strategy, together with deep experience of brand and product innovation in B2C and B2B. Bold and visionary, but also empathic, Mike inspires people to develop ambitious mindsets on their transformation journeys.

Maike Hohnhorst

Consultant

With her proactive approach, Maike combines creativity and structure and finds flexible, effective solutions for our clients, which she explains and clarifies with strong communication skills.

Lisa Schulte-Kortnack

Professional Consultant

Empathic, pragmatic, and with a positive can-do attitude, that's how clients describe Lisa. She is passionate about diving sustainably together with new technologies. Her way of working is always human-centered, and she likes to dive deep into complex transformational projects.

Ava Bredfeldt

Team Assistant Brand & People

As Team Assistant for Brand & People, Ava ensures efficient administration and supports the team in brand development and personnel matters. Her background in communication design brings creative insights, while her organisational skills ensure a structured workflow.

Hanna Siebke

Senior Consultant

In volatile environments, Hanna maintains a calm demeanor while identifying holistic, yet pragmatic solutions for her clients' challenges. With her human-centric approach, she brings empathy and open-mindedness, fostering the creation of win-win solutions.

Lena Harnisch

Senior Manager

With cross-industry experience in marketing, sales, and service, Lena's focus lies in conceptualisation and implementation of organisational transformation. Result-oriented, yet creative, Lena successfully contributes clarity, drive, and control for complex projects.

Fanny Eynöthen

Manager

Fanny brings a unique blend of strategic vision and practical execution, ensuring projects are not only well-planned but effectively executed. Her expertise in New Work and agile methodologies fosters cross-functional collaboration and drives successful project outcomes.

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Stephan Gille

Manager

Stephan has extensive experience in implementing a wide range of IT systems, including ERP, DAM, and MES. Stephan's strengths find his passion for projects, his humor, and his leadership skills, leading to successes across various industries.

Julius Prinz

Junior Consultant

Julius brings his analytical skills and appreciative communication to projects. His curiosity constantly drives him to acquire new knowledge and develop innovative solutions. In doing so, he focuses on participatory approaches to enable teams to achieve top performance collectively.

Toni Gau

Working Student

With a background in literature and basically everything else that has to do with text, Toni supports the editorial team at 55BirchStreet. Thanks to Toni's quick grasp of topics, he is responsible for the majority of our blog posts, apart from that he supports our social media channels.

Janine Schulz

Senior Consultant

Clients describe Janine as 'motivating and reliable' with a quick understanding of complex issues and needs. Janine is truly curious and loves to learn about new forms of organisations, projects, and different kinds of people.