Short Bio Sheet

Arjen Iwema – Owner and founder of W-focus
Business consultant with extensive experience in a variety of sectors including non-governmental organisations, pharmaceuticals, health care and medical devices, oil and gas/energy, aviation across Europe, the Americas, Southeast Asia, Africa and the Middle East.

During his 8 years as a strategy consultant at McKinsey & Company in Geneva (last role: Associate Principal), Arjen has worked in a variety of sectors including non-governmental organisations, pharmaceuticals, health care and medical devices, investment banking, energy, across 5 continents strategy development, capability building and performance management topics.

In his current role, works for a leading management consulting company running complex engagements in healthcare and or organisation capability building and in training. Every year he trains ~450 lower and mid-tenured consultants in problem solving skills, team and self-management. Part of his mission is also to build a stable network of trainers inside his client organisation through coaching them.

Arjen is the training developer for these week-long trainings and acts as lead-faculty on the 10-12 training weeks he runs, often not only taking responsibility for his own stream with 30 participants, but also for 1-2 parallel streams. New is his engagement in building a series of video-conference-based sessions in preparation of on-site capability building. Arjen is the top-ranking trainer among his cohort of qualified trainers. Arjen has a strong track record developing actionable, measurable solutions in not-for-profit and for-profit organisations building on a deep understanding inter-organizational dynamics trends as well as capabilities. Top-ranking McKinsey training expert on low-, mid and advanced tenure training programs including MBTI® Myers Briggs Type Indicator counselling.


Arjen is a certified MBTI® Myers Briggs Counsellor, expert in organisational & leadership development Practice Expert. He holds an MBA from IMD, the Institute of Management Development in Lausanne, Switzerland and a Master’s of Science in Aerospace Engineering from Delft University of Technology, the Netherlands and is fluent in four languages.

Glyn Mitchell – Independent Consultant
An executive coach and consultant in leadership and talent development, Glyn works with Fortune 500 companies to develop the effectiveness of individual leaders and to help clients develop strategies for leadership and talent development, and employee engagement.

During the last 12 years he has provided training and individual coaching to 1’000+ clients, all of them professional service providers. Glyn is one of the highest-rated McKinsey training experts on low-, mid and advanced tenure training programmes including MBTI® Myers Briggs Type Indicator counselling. Glyn has worked with leaders in transition who are preparing for, or have just received a promotion, high potential leaders, and leaders who need to learn specific skills to meet the requirements of their role. His coaching is aimed at building capability and the resources to continue on the leadership journey in an independent and sustainable manner.  He has provided targeted training for leadership, communication, and conflict resolution and has helped clients interpret employee engagement data. He has worked with a wide variety of companies, including pharmaceuticals, chemical manufacture, pulp and paper, media, financial services including investment banking, management consulting, and private equity.


Glyn is a graduate of the University of York in Economics and then qualified and practiced as a lawyer (Solicitor) in the UK, giving him a business perspective and excellent communication and problem solving skills. He has worked for two non-profit educational trusts providing team and leadership development using experiential learning. Glyn holds a post-graduate Certificate in Executive Coaching and Leadership Mentoring, is licensed to administer the Myers Briggs Type Indicator, the FIRO-B, the Cultural Orientation Framework, and is a practitioner in Neuro-Linguistic Programming.

Sandra Werner is a highly-skilled specialist for PowerPoint presentations, templates and graphic design. She 18 years of work experience as a visual aid specialist at McKinsey & Co., Zurich (Switzerland). In this position she delivered a fast and reliable service to consultants & partners. Additional tasks included PowerPoint/graphical training to staff members in Zurich, Morocco and Geneva. She also took responsibility for recruiting of new firm members. She was deeply involved in projects covering a wide variety of sectors, for example Banking, Insurance, Health Care, Aviation, Transportation and IT. On the basis of her expertise and communication skills as well as her concise and efficient working attitude, she was regularly elected as a team member for highly confidential projects.

Sandra speaks fluently German, English, French, Italian and Spanish. Her love for foreign culture made her travel the world: Sandra lived two years in the Caribbean working in Tourism, six months in Cape Town (South Africa) and four years in Sydney (Australia) where she studied Opera at the Sydney Conservatorium. After completing her Diploma in Opera, she founded her own singing school in Eglisau (Switzerland). In the graphic department she worked as trouble shooter and PowerPoint trainer for Presentation Factory Zurich and is holding selected mandates including Acrea AG and W-focus Inc. as a visual aid specialist.

W-focus’ has an Executive Board of Professionals is ready to hands-on, on- or offsite support and/or provide new perspectives.

Professor Dr. Frank Kortmann – Independent counsellor
Psychiatrist specialised in trans-cultural psychiatry and organisational development. 20+ years’ experience in managing large and complex mental health institutions, 20+ years of experience as an independent advisor and counsellor to international organisations, including the WHO, focusing on conceptualisation, process design, training and daily management of mental health (including trauma-focused) institutions in non-western countries including Ethiopia, Cambodia, East Timor, Bosnia, Kosovo, Yemen, Turkey, Suriname, Afghanistan and the Palestinian territories. In the Netherlands, his home-base, Frank concentrates on consulting and training to (forensic) organizations on organizational development and performance management.

Frank is a medical doctor (University of Groningen, the Netherlands), professor in trans-cultural psychiatry (Radboud University Nijmegen, the Netherlands) with a specialisation in psychoanalytic psychotherapy and forensic psychiatry and a PhD in Medical Science on the topic of trans-cultural communication.

Kathrin Puhan-Henz – Owner and founder of meetings that work
Kathrin is the founder of meetings that work in Zurich, Switzerland. She serves clients as a trainer, coach and moderator with her work evolving around organizational performance improvement. Main fields of expertise comprise principles of effective meeting management, communication, team development and change management. Kathrin is based in Zurich and active on an international basis. She often acts as faculty for presentation delivery and workshop moderation in several certified advanced education programs. She has broad industry experience in Blue Chip companies as well as in the not-for-profit sector. She acts as a pro bono counsellor to the government of the Canton of Zurich. Kathrin holds a master’s degree in history and an MBA in Business Engineering from St. Gallen University, Switzerland. She is also a certified MBTI® coach and a Leadership Circle Certified Practitioner (360° Feedback).

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