Gunther is an independent Scrum Caretaker; a connector, writer, speaker, humaniser. Gunther assists, serves, advices, suggests on all things Scrum. He works with teams, individuals, executives. He facilitates learning and unlearning. He thinks, reflects, wonders and wanders. He deliberately emerges opportunities to deliver value.

His business is Ullizee-Inc. His belief is that Scrum, the most applied Agile framework, is not only great for increasing the value that products deliver but is also a way to re-humanise the workplace for people. Gunther likes to inspire individuals, teams, departments and organizations to realize this potential of Scrum, free of corporate structures.

From Gunther’s standard offer of services:

I appreciate how every person, team, department and organisation is unique. It inspires me to stay away from fixed approaches. This is in line with my fundamental belief of what it means to be a professional in the Agile space    (…)    I don’t require specific task descriptions. I require no title. I don’t post my assignments or expose the name of your organisation, unless you explicitly allow or ask me to do so.

Beyond Scrum, Gunther is all about his family, life, books, and music. He communicates in Dutch and in English.

A Scrum Caretaker

Gunther Verheyen is a longtime Scrum practitioner (2003). After a standing career as a consultant, he became partner to Ken Schwaber, co-creator of Scrum, and Director of the Professional Scrum series at Scrum.org (2013-2016). Gunther nowadays engages with people and organizations as an independent Scrum Caretaker.

Gunther ventured into IT and software development after graduating in 1992. His Agile journey started with eXtreme Programming and Scrum in 2003. Years of dedication followed, years of employing Scrum in diverse circumstances. As from 2010 Gunther became the inspiring force behind some large-scale enterprise transformations. In 2011 he became a Professional Scrum Trainer.

Gunther left consulting in 2013 to found Ullizee-Inc and partner exclusively with Ken Schwaber, Scrum co-creator. He represented Ken and his organization Scrum.org in Europe, shepherded the ‘Professional Scrum’ series and guided Scrum.org’s global network of Professional Scrum Trainers. Gunther is co-creator to Agility Path, EBMgtTM (Evidence-Based Managing of Software) and the Nexus framework for Scaled Professional Scrum.

Since 2016 Gunther continues his journey as an independent Scrum Caretaker; a connector, writer, speaker, humanizer. His services build on 15+ years of experience, ideas, beliefs and observations of Scrum, expressed in re.vers.ify, an act of people re-imagining their Scrum to re-emerge their organization.


Gunther created the acclaimed book “Scrum – A Pocket Guide” in 2013, with a second edition published in 2019. Ken Schwaber recommends his book as ‘the best description of Scrum currently available’ and ‘extraordinarily competent’. In 2016 the Dutch translation was published as “Scrum Wegwijzer“. In 2017 the German translation was released as “Scrum Taschenbuch”. Other translations are planned for 2019.

When not travelling for Scrum, Gunther lives and works in Antwerp (Belgium). He finds joy in spending much of his time under the same roof as his wife Natascha (Atelier Ullizee) and their 3 kids.


Ullizee, what’s in a name
(aspecten van, aspects of)

Enter… the world of Ullizee

De illusie van Ulysses aan Zee

The illusion of Ulysses at sea

Een blog in de talen van een wereld,
over meningen en niemendal,
weinig meer dan hunkering, want
ik ben een luis een nul nihil,
maar als ge niet oppast,
kruip ik in uw pels.

If I may, I’ll speak in tongues
or try some English
…maybe it’ll end up just the same

Voor eeuwig de uwe / forever yours
(of zolang ‘tinternet duurt / Internet timing)

Lees en volg op mijn blog wat ik denk te weten van Scrum, welke boeken naar mijn volstrekt bescheiden mening aankopenswaardig zijn (met een beetje goede wil kom je zelfs te weten waarom…)

en wie weet hier en daar een eigen schrijfsel
bezinksel van bezeten geest, uiting van poëzie