William Corless

William Corless

Relevant Experience

William is a much-sought-after executive coach, mediator and corporate trainer. Working with Multinational clients in Ireland, Europe, UK, Scandinavia, US and African markets. In conjunction with his role as a senior partner in the Mediation Foundation Ireland: William is a senior associate faculty member of the United Nations Training School, a guest lecturer with Notre Dame University and an in-demand Program Director and senior faculty member with the Irish Management Institute. He is also a mentor for the executive MBA programmes in NUI Galway and Dublin City University. William has a master’s degree in Mediation and Conflict intervention from The Edward M. Kennedy Institute, NUI Maynooth. He has been tutored on Negotiations by Dr Linda Ginzel of Chicago Booth Business school and also studied the Harvard model using the Principles of Negotiation. William is a member in standing of the Mediators
Institute of Ireland.

William also specialises in Leadership Development and Executive Coaching, Communication and Body language, High-Performance Teams, Advanced Negotiation Skills, Diversity & Intercultural Communication, Organisational Behaviour, Conflict, Resilience & Stress Management.

William currently works with a range of national and international clients in a range of sectors. He designs and delivers tailor-made programs to meet the specific needs of participants. His style of delivery is considered open, honest and engaging.


  • Intercultural Management Notre Dame University
  • High-Performance Leadership in Teams Chicago Booth Business School
  • Organisational Behaviour London School of Economics
  • Organisational Design Ashridge Business School
  • Adaptive Leadership Harvard Kennedy Business School
  • Negotiation and Leadership NUI, Galway
  • Mediation and Conflict Intervention NUI, Maynooth
  • Stress Management British Psychological Society

Qualifications and Professional Status

  • Emotional Intelligence EQi certification
  • MBTI and 16PF (Registered Member of BPS)
  • DISC
  • Insights Discovery Certification
  • Accredited and Certified Mediator -Mediators Institute of Ireland & NUI, Maynooth
  • International Coaching Federation – ACC Accreditation
  • NLP Master Practitioner
  • Lego Serious Play Methodology
  • Visual Facilitator

Get a FREE Consultation

If you are in a dispute and/or are worried about a conflict, please contact the Mediation Foundation of Ireland for a no obligation consultation.