Meet the Team

John Raddall

John, the founder of Quanta Consulting, is a game-changer who thrives on helping clients achieve the impossible. With a passion for finding new and better ways of doing things, John is a tireless innovator who is never satisfied with conventional wisdom. His focus is always on inventing new methods that can be practically implemented to improve knowledge and performance in organizations.

John's love of working with high-energy and creative individuals has led to the co-design of several original solutions that have proven to be successful in practice. As the architect of several original methods, from energy assessments to techniques for changing behavior and performance, John's expertise has made him a sought-after consultant to clients in South Africa and Europe.

A prolific writer, John has authored numerous articles on his work and is a sought-after speaker on Executive Development Programs internationally. He has also shared his philosophy in a TEDx talk in Prague, where he inspires audiences with his enthusiasm and determination to challenge the status quo and push boundaries. John is a force to be reckoned with, and his passion for innovation and practical problem-solving has made him a leader in the consulting industry.

Michelle Hoffman

Michelle is Quanta's esteemed global expert in team development. With over 25 years of experience in Quanta Consulting, Michelle has inspired hundreds of leaders and teams to achieve high-energy and excellence. Her unparalleled talent for generating trust and enthusiasm, coupled with her unique and practical skill of transferring new knowledge, has made her a go-to guru for team development worldwide.

As a co-developer of Quanta's unique assessment tools and high-energy systemic methodologies, Michelle has a deep understanding of what it takes to drive change and elevate leadership behavior and team performance. Her core strengths lie in creating safe and trusting spaces for people at all levels of an organization, allowing them to apply Quanta's methodology for sustainable change at both personal and business levels.

Michelle has worked with leaders and teams across a diverse range of industries and multi-national organizations. Her passion for helping people create lasting change has earned her an exceptional reputation in the field of team development, making her an invaluable asset to any organization seeking to reach its full potential.

Maria Biquet

Maria Biquet is a highly experienced and professional coach and consultant who facilitates Quanta projects in Greece. She is an experienced multilingual management consultant and business coach with a vast experience in diverse business fields.

She has worked with senior executives from different countries in the private sector, the public sector and international NGOs. Over the past 20 years she has worked for multinational companies in strategic marketing positions and led start-up projects for setting up new companies. She brings knowledge of diverse business sectors such as Telecommunications, Automotive, Retail Financing, Insurance, Banking and Consulting.

For more than 20 years she has studied various methodologies for se-development and change including Systemic approach, Appreciative Inquiry Approach, NLP and mindfulness techniques. VP Marketing Communications of EMCC Greece, Senior Researcher on Ethics EMCC (European Mentoring & Coaching Council). She is a Senior Practitioner Coach and Mentor EMCC Accredited.

Be inspired!

"I want you to get excited about who you are, what you have, and what can still be for you. I want to inspire you to see that you can go far beyond where you are right now".

Virginia Satir

Our associates

David Buch


David is our global guru and digital pioneer who has designed an all-in-one cloud based platform for building websites, mobile apps, sales funnels, and business branding.

He has created all of Quanta’s online solutions including customised surveys and assessments, and all our business related software support.

He is highly experienced in both the IT and business world, offering a unique combination of skills that will add real value to any business. He is a true professional.

Gaylin Jee

33 Emeralds

Gaylin aims to build a better world through developing leaders, building social capital in teams and raising awareness of more conscious business strategies and models.

Practically she activates Game Changing Potential in leadership and across the organisation.  She runs workshops and programmes to develop people to thrive through chaos and facilitates generative strategy and planning sessions, building game changing bridges into the future.

Our locations




Our satisfied clients

Follow us

Get the latest news

360 Degree Assessment Instructions
{Plotalot Plugin: chart 176 - Plot 1: Illegal mix of collations (utf8mb4_unicode_ci,IMPLICIT) and (utf8mb4_general_ci,IMPLICIT) for operation '='}