About Us

Amy VaaS is Chief Executive Officer of RW3 CultureWizard, leading the company into its next chapter and expanding how it helps organizations meet the realities of today’s global workplace.

With more than 25 years of experience, Amy has led major initiatives in organizational transformation, leadership development, talent strategy, and employee experience. She brings a pragmatic, data‑driven approach that connects culture insights, relevant learning experiences, and the thoughtful use of technology and AI to the outcomes clients care about: engagement, effectiveness, and performance. 

At RW3, Amy is building on the company’s deep expertise in culture through data-driven insights, relevant learning experiences, and the thoughtful use of technology and AI. Her focus is helping clients move beyond good intentions to create meaningful, measurable changes in how people lead and work together across cultures and geographies.

Sean Dubberke is Chief Learning Officer at RW3 CultureWizard and a leading practitioner in intercultural collaboration and global leadership. He oversees the strategy, design, and delivery of RW3’s digital and facilitated learning experiences. 

Sean brings deep expertise in how culture shapes trust, communication, decision-making, and team performance. He has advised global organizations and delivered hundreds of learning programs and conference presentations across North America, Asia, Europe, and Latin America. His work makes complex cultural dynamics practical, giving leaders and teams approaches they can apply to real workplace challenges.

A sought-after speaker, facilitator, and advisor, Sean is known for engaging audiences, challenging established assumptions, and turning insight into action. He holds master’s degrees from the London School of Economics and the University of Leipzig and a bachelor’s degree from the University of California, Santa Barbara. Fluent in Spanish, he has traveled to more than 65 countries and lived and worked in Germany, Spain, and the United States.

Annette Messler is Chief Financial Officer of RW3 CultureWizard, bringing more than 25 years of experience across finance, accounting, human resources, and global operations.

Before joining RW3, Annette held leadership positions at Windham International and ECA International and served as Vice President of Operations and Chief Financial Officer for an expatriate and international payroll firm. These roles gave her extensive experience supporting organizations operating across countries, currencies, and regulatory environments.

At RW3, Annette oversees the company’s financial management and business operations. Her international perspective helps ensure RW3 is a responsive, reliable, and trusted partner to its global clients. 

Charlene Marmer Solomon is President, Vice Chair, and co-founder of RW3 CultureWizard. For more than 25 years, she has been a defining force in the company’s point of view on culture, leadership, and global workforce effectiveness.

A recognized authority on intercultural communication, Charlene represents RW3 at leading business forums, global industry events, and client engagements. She brings cultural dynamics to life through thorough research, relevant insights and practical guidance helping leaders and organizations build the cultural intelligence needed to work successfully across borders, strengthen collaboration, and improve performance.

Co-author of Capitalizing on the Global Workforce: A Strategic Guide to Expatriate Management and Managing Across Cultures: The Seven Keys to Doing Business with a Global Mindset, she is widely regarded as a leading voice in the field. An award-winning author of eight books, she has written hundreds of articles, lectured at UCLA, and spoken to audiences worldwide. Her perspective is also informed by living and working in Japan, where she studied Japanese language and culture and developed learning curricula for business professionals.

As President and Vice Chair, Charlene helps shape RW3’s strategic direction and thought leadership while continuing to serve as a prominent voice for the company and the field.

Joshua Sturtevant is Chief Technology Officer at RW3 CultureWizard. Since joining RW3 in 2006, he has played a foundational role in developing the company’s digital platform, products, and strategic partnerships.

Josh leads RW3’s technology and product strategy, translating client and learner needs into scalable digital tools and experiences. His work spans platform development, product innovation, and the technology infrastructure supporting RW3’s learning and assessment solutions.

Josh is also guiding RW3’s thoughtful adoption of emerging technologies and AI, with a focus on improving personalization, generating useful insights, and making learning more accessible and relevant to global workforces. 

Michael S. Schell is Chairman and co-founder of RW3 CultureWizard and a pioneer in the field of intercultural business effectiveness. For more than 30 years, he has developed practical models and tools that help leaders and organizations work successfully across cultures and different working styles.

Before founding RW3, Michael established Windham International, where he created the Windham Intercultural Model. He then created the RW3 Intercultural Model,which remains the foundation of RW3’s approach to strengthening communication, collaboration, and performance across cultures.

Michael co-authored Capitalizing on the Global Workforce: A Strategic Guide to Expatriate Management and Managing Across Cultures: The Seven Keys to Doing Business with a Global Mindset. His work has helped shape RW3’s digital learning platform and its suite of courses, assessments, and tools used by organizations worldwide.

As Chairman, Michael provides strategic guidance to RW3’s leadership and supports the company’s continued growth and evolution.