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.

Project Management Professional (PMP®)

Systemic-constructivist Coach

Organisational Development

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Ava Bredfeldt

Team Assistance Brand & People

Ava Bredfeldt

Team Assistance 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.

Backoffice

Marketing

HR

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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.

Organisational Development

Change Management

Real Estate

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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.

Project Management Professional (PMP®)

Organisational Development

Change Management

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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.

Change Management

Project Management

Organisational Development

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Lena Harnisch

Senior Manager

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.

Organisational Development

Artificial-Intelligence

Project Management

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Lisa Schulte-Kortnack

Manager

Lisa Schulte-Kortnack

Manager

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.

Organisational Development

Project Management

Sustainability

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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.

Business Model Innovation

Digital Transformation

Strategic Advisory

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Marvin Hamm

Senior Consultant

Marvin Hamm

Senior Consultant

With a strong background in organizational development and AI implementation, Marvin supports clients in navigating complex transformation processes. His combination of technical understanding and facilitation expertise enables clear structures, well-founded decisions, and sustainable results. Clients value his ability to translate innovation into practical solutions—especially in dynamic environments.

Artificial-Intelligence

Project Management

Organisational Development

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Matthias Kreuzer

Senior Consultant

Matthias Kreuzer

Senior 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.

Supply Chain Management

Digital Transformation

Project Management

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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.

Artificial-Intelligence

Product Innovation

Strategy

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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.

Project Management Professional (PMP®)

Organisational Development

Digital Transformation

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Timm Hauschild

Manager

Timm Hauschild

Manager

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.

Artificial-Intelligence

Project Management

Real Estate

Sustainability

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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.

Editorial

Social Media

Marketing

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You

You

Change Management

Organisational Development

Artificial-Intelligence

Project Management

Sustainability

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INTERESTED?

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
Expanding capabilities

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.

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Shaping
technology

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

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Empowering
people

With expertise in mediation, coaching and special training, our partners expand our range of services in organisational development.

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Improving
processes

BPO, supply chain management or Six Sigma are examples of the expertise that our partners add to our specialist knowledge in process management.

Get in touch

Have a question or want to explore how we could work together? Reach out to us on LinkedIn or use our contact form — we’d love to hear from you.

Martin Orthen

Coffee’s on you, the rest is on us.

martin.orthen@55birchstreet.com