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-humanize the workplace, a better workplace for people. Gunther likes to inspire individuals, teams, departments and organizations to realize this potential of Scrum, free of corporate structures.

Rather than introducing fixed solutions, Gunther’s involvement mostly consists of mirroring and challenging ideas, beliefs, practices and organizational constructions.

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, as 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 of Agility Path, EBMgt(tm) (Evidence-Based Management) 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 16+ years of experience, ideas, beliefs and observations of Scrum.


Gunther created the acclaimed book “Scrum – A Pocket Guide” in 2013. A 2nd edition was published in 2019. Ken Schwaber recommends his book as ‘the   best description of Scrum currently available’. Several translations of this work are available. In 2020 Gunther published the book “97 Things every Scrum practitioner should know”, holding essays from field experts across the world.

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