Our team

We combine expertise and experience from a vast range of projects, areas and industries with a structured curiosity for the known and the unknown as well as the joy of working together as equals.

We are committed to our clients by always being at their side as a sparring partner and supporting them in mastering their current challenges.

Anne Westphal

Senior Manager

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.

Janine Schulz

Senior Consultant

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 organizations, projects, and different kinds of people.

Matthias Kreuzer

Consultant

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.

Lisa Schulte-Kortnack

Professional Consultant

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.

Maike Hohnhorst

Consultant

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.

Martin Orthen

Founder & CEO

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.

Mike Betts

Director

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.

Stephan Gille

Manager

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.

Ava Bredfeldt

Team Assistant Brand & People

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 organizational skills ensure a structured workflow.

Timm Hauschild

Expert Consultant

Timm Hauschild

Expert Consultant

With Timm, you gain access to a tireless learner who eagerly seeks out new trends. With his positive attitude, he turns challenges into opportunities and brings valuable innovation to every project.

Toni Gau

Working Student

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.

Celina Rerop

Junior Consultant

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.

Fanny Eynöthen

Manager

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.

Lena Harnisch

Senior Manager

Lena Harnisch

Senior Manager

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

Hanna Siebke

Senior Consultant

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.

Julius Prinz

Junior Consultant

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.

Michael Steiner

Junior Consultant

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."

Our partner network

We've built a solid, highly connected network of specialist partners covering the depths of technology, processes and people - in terms of products and services - to round up our services. Whether moderating a single workshop or delivering multi-year transformations - together with our network, our team is well equipped to handle different scopes and project challenges.

Tech

Our partners extend our expertise in technology with skills in software development, Microsoft or SAP for example.

People

Our partners extend our expertise in organizational development with skills in mediation, coaching or special trainings.

Processes

Our partners extend our expertise in process management with skills in BPO, supply chain management or Six Sigma.

Join 55

We are looking for "out of the box"-thinkers who thrive on challenges and bring structure to fast-paced environments. Exciting projects await — step out of your comfort zone with us! Are you interested?

Check open positions ↗