Certified Coach Network

Christina Sestan
Christina Sestan
Christina is an ambitious, energetic, and deeply caring coach, facilitator, and speaker with almost twenty years of organizational development experience, focusing on leadership in a variety of organizational settings including healthcare, municipal government and academia.
Diana Collett
Diana Collett
Dr. Diana Collett has over 20,000 hours experience in facilitating change. Her mission is to promote inclusive ways of using power for leaders and their teams to align their practices with their vision and support each other, the organisation and the world we live in.
Irena Konečna
Irena Konečna
Irena is an organizational psychologist who helps organizations to move forward through working with culture and team dynamics. She uses coaching, facilitation, and consulting and combines applied psychology tools with her experience in business environment.
Jen Reed-Lewis, MA CSODP
Jen Reed-Lewis, MA CSODP
Jen supports leaders and change-makers meet the challenges of today while building inclusive, productive, change resilient workplaces and organizations. With more than 25 years of coaching and organization development experiences, she helps leaders make more mindful choices on how they can more effectively use their power to draw out the best in themselves and others.
Joy Warmington
Joy Warmington
Joy began her leadership career over 30 years ago designing ground-breaking learning programs for marginalized communities. Then came senior leadership roles in education, local authority and civil society, including 19 years as brap’s CEO, one of the UK’s most progressive equality and human rights charities.
Julia Wolfson, Ph.D.
Julia Wolfson, Ph.D.
Julia specializes in the transformation of residential care and education services, often prompted by systems failures and abuse. Her experience in the global north and south in local communities, NGOs and government organizations spans 40 years.
Kathleen Ingram
Kathleen Ingram
Kathleen has over 30 years of experience in the environmental management, compliance, and sustainability fields, and has worked with environmental consulting, state, not-for-profit, and federal organizations. Her federal experience includes service at an Army installation, Army headquarters, and the Department of the Interior headquarters.
Kawira Nyaga
Kawira Nyaga
Kawira Nyaga is a facilitator and coach who evokes the innate wisdom that lies within groups and individuals. She believes that more awareness of, and access to inner and outer powers is key to personal and social development. This belief nurtures her passion of holding spaces that allow the exploration of growing edges leading to engagement and transformation.
Leta Chen
Leta Chen
As a highly experienced leadership development and conflict coach, accredited mediator, facilitator and registered psychologist with over 30 years of direct practice in her field, Leta is dedicated to holding herself and others to higher levels of awareness and accountability to how they show up in the world, for self and in relationship.
Liz Skelton
Liz Skelton
Committed to developing leadership for a more equitable and inclusive world. Liz Skelton is renowned globally for her work and expertise in Australia and the UK as a leader, thought-leader, capacity builder, consultant, author, and facilitator of leadership for social and adaptive system change.
Lucette Quarteron
Lucette Quarteron
Lucette Quarteron is an executive coach and specialist in communication and leadership. Her favorite themes are leadership combining performance and caring, the proper use of power, teamwork and well-being in the workplace. She accompanies leaders and organizations through her executive coaching, workshops in collective intelligence, training courses and strategic advice.
Lucy Shenouda
Lucy Shenouda
Lucy Shenouda’s enduring passion is exploring the human condition. She strives to explore the mysteries of the human experience, cultivating best thinking, creativity, and resilience.
Lukas Hohler
Lukas Hohler
Lukas Hohler works internationally as a coach, facilitator and consultant for individuals and organizations in change processes.
Miguel Vazquez
Miguel Vazquez
Miguel Vazquez is a consultant, facilitator, and coach, and a senior associate at Diamond Leadership. He also is CEO of Qumano Consulting, based in Monterrey, Mexico.
Mila Gaca
Mila Gaca
Mila is a depth psychologist with over 15 years of experience working with individuals, groups, and organizations. In her work she supports clients in working with emerging creative properties of inner processes, team dynamics, or organizational directions giving them a tangible form that moves things forward.
Nadine Wolf
Nadine Wolf

Nadine is dedicated to letting individuals in organizations become more aware of their strengths, and power – because effective self-leadership is the key to leadership which will make a difference in organizations and in life in general. She has a Business Administration Diploma and has worked in different companies and roles. Her own self-leadership journey included agile training at an agile consulting firm, coaching training (IOBC Certification) and accreditation as Kanban trainer and coach (AKT/AKC). Since 2016, she has been involved with The Responsibility Process®, she is a Leadership Gift Coach and trainer in Christopher Avery's international Coaching Program. Becoming DPI coach has been a valuable addition to support professionals in using their personal power more effectively. Her goal is to show her clients the way to their own individual approach to power and leadership. Nadine is founder and CEO of Selbstführung.

Paul Donovan
Paul Donovan
Dr. Paul Donovan, Owner and Director of The Change Company, founded in 1999. Paul specializes in working with senior executive teams facilitating team building and strategy, coaching and leadership development.
Sally Wiencke
Sally Wiencke
Sally Wiencke is a PCC accredited coach with the International Coaching Federation, Power Intelligence®, Certified Narrative Coach™ EMERGE®, and Cinergy® conflict coach and nationally accredited mediator with advanced status. She has over 25 years of enabling transformational change in individuals, small groups and organizations.
Saman Hussain
Saman Hussain
Saman Hussain is a certified professional coach, mediator, facilitator, and consultant. She has several years of experience in the public sector, with indigenous communities, non-profits and academia.
Sara Huang
Sara Huang
I am an independent strategic and creative wayfinder who specializes in team-leadership. By sourcing and utilizing the wisdom of the crowd. By asking questions to bring awareness and hold space for greater things to emerge. As an enabler I serve by paying attention to the interdependence between human beings, with respect to the unique gift each of us brings to the whole.
Sheelagh Davis
Sheelagh Davis
Sheelagh has over 20 years experience as a Leadership and Organization Development coach, consultant and facilitator, working with organizations to build leadership, culture and equity/inclusion. She has worked with leaders and teams in public (government), private, non-profit and union settings, within Canada and internationally.
Sherry Matheson
Sherry Matheson
Sherry Matheson is an Innovative, Collaborative & Strategic Change Specialist, Consultant and Systems Coach, coaching leaders, teams, and social systems, moving them from fear and frustration to being more engaged, courageous and innovative.
Sonsoles Alonso
Sonsoles Alonso
Sonsoles’ original career is an example of personal leadership, creativity, lightheartedness, perseverance, and hard work. Before becoming a team and business transformation consultant, Sonsoles was a well-known pianist and producer of transdisciplinary contemporary music projects involving high tech in The Netherlands.
Sylvia Ondrisova
Sylvia Ondrisova
I work as a psychotherapist, coach and lecturer in private practice in Bratislava. As a lecturer and facilitator, I mainly focus on the issues of leadership, (em)power(ment), personal/team development and conflict resolution. My aim is to support awareness and change on both levels: attitudes and skills.
Tathra Street
Tathra Street
Tathra has been coaching professionally for over a decade and brings a fresh perspective. She empowers emerging leaders to be more effective and make the difference they want to make. Her work spans across public, private and community sectors, residing at the intersection of professional and personal development.
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