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Oct 26, 2021
excellent class
excellent class! powerpoint free, plenty excercises and great energy
Klant
Sep 27, 2021
Awesome training with many Liberating…
Awesome training with many Liberating Structures that increased the conversations between participants. Recomended!
Richard Acosta
Sep 27, 2021
Very interactive class
Very interactive class, where Barry and Christiaan share their comprehensive
knowledge and broad experience. For me I wanted to gain a better understanding of the scrum mater role and after this course I summarize it as follows: "A good scrum master knows how to walk the fine line between serving the team and leading the team".
Hertogs
Jun 28, 2021
Christiaan and Barry did a great job!
Christiaan and Barry did a great job at designing and delivering this training. Love how we worked a lot with Liberating Structures and that (almost?) every one of those exercises can be done with a scrum team. A wealth of knowledge and practical application thereof.
Pascal Clarkson
Jun 25, 2021
It was just amazing
It was just amazing. So much knowledge and room for own questions and interrpretations. Setting was great, happy to have done a F2F course again :) Thanks guys!
Sarah Janssen
Sep 17, 2020
Learning by doing
Really nice how many liberating structures are embedded in all the blocks of theory. Excellent teachers and facilitators, kudos to Barry and Chris. Thanks!
Ronnie Klanderman
Jun 25, 2020
Excellent training by the Liberators
Excellent training by the Liberators. I recommend it.
Guino Henostroza
Mar 9, 2020
Excellent!
Barry and Christiaan made this training an tangible and extremely worthwhile learning experience. I took a lot out of it, not just content-wise but also in how a brilliant training can be structured. Thank you for all the good memories and Aha! moments.
Elke Bethke
Jan 27, 2020
Training was amazing, but assessment sucks!
Training was amazing. I wish I could tell the same about PSMII assessment, but it was confusing, frustrating and make me angry, as big part of questions have nothing to do with topic and don't giving any hints in advance (budgeting questions, scaling questions, etc.).
If you want to test me on Scrum - go ahead. If you want to test me on practical implementation of theories in reality - your questions vague and suggest that for all organizations answer should be the same.
Yury Zaryaninov
Dec 19, 2019
A golden combination
The combination of Daniel Vacanti and The Liberators is golden. They give a great mix of theory and exercises. This class is a must for everyone working in a scrum environment.
Sven de Koning
Dec 14, 2019
The Class was excellent!
The Class was excellent!
Barry and Chris master the framework and are able to add experience and the Liberating Structures to the content. The result are two very interactive days that are filled with theory and practical exercizes.
And because the ‘students’ were very eager to learn and share, the Class got even more immersion.
The location in the Volkshotel in Amsterdam was very okay as well, with a good vibe and also good vegetarian lunch and sustainable snacks.
I got a lot new (and forgotten...) insights and take-aways.
Very well done and thank you very much.
Harold Schuringa
Dec 13, 2019
Awesome and practical
Awesome. I go back home with many ideas and useful tools. Definitely helpful to be a better Professional Scrum Master!
Olivier Ledru
Oct 21, 2019
Excellent class to deepen your understanding of scrum values & empiricism with great teachers! Thanks Barry & Chris!
Excellent class to deepen your understanding of scrum values & empiricism with great teachers! Thanks Barry & Chris!
Markus Broder
Sep 23, 2019
Energetic and thought-provoking PSMII class
I took part in the PSMII course with Barry & Christiaan. It was a thought-provoking and energetic class that really helps you to improve and consider your own Scrum experiences.
I would highly recommend the class.
Miss Lauren Holden
Sep 21, 2019
Awesome!
Awesome! It was great to learn from Barry Overeem and Christiaan Verwijs. I enjoyed the interactive class a lot! Lots of learnings and sharing with other great Scrum Masters! Thanks all!
Peter
Jul 3, 2019
These guys are very dedicated.
These guys are very dedicated. (Barry Overeem and Christaan Verwijs)
I love the interactive way of providing the training. My first "No Powerpoint" experience, however they used all these flipovers this was very helpful and inspiring.
The training generated a lot of ideas I have to exercise with my own clients.
"Job well done guys"
Dennis Olsthoorn
Jul 3, 2019
Great Training with awesome Trainers…
Great Training with awesome Trainers and Participants.
Florian Goldmann
Jul 3, 2019
I really liked the in dept topics
I really liked the in dept topics. The practical use of liberating structures and the energie from Barry and Christiaan.
Jochen
Jul 3, 2019
Great energy and fun
Great energy and fun. Nice new insights and always good to have conversations with other people and share views, perspectives, best practices and experiences.
This training provided a lot of opportunities to combine everything and learn (how) to improve.
Gerrit
Jun 29, 2019
Very insightful and interactive
Very insightful and interactive, it was full of real cases which really helped me get even better understanding, the kanban simulation game on day one was an awesome experience
Rasheed Raya
Jun 17, 2019
very interactive and fun way to learn
very interactive and fun way to learn
Christian and Jasper did a great job, very interactive way to learn about the scrum framework, with exercises and continue discussions with the group.
If I should mention something to improve, I would say It becomes at some point too much, as you really need to think and ask questions yourself with no always the assistant of the trainers.
In general, very productive, easy to understand and good opportunity to network !
Elena Sanz
Jun 17, 2019
Well run course with clear focus and…
Well run course with clear focus and learning.
Joram van Essen
May 23, 2019
Truely an nice addition to my skillset.
Truely an nice addition to my skillset.
Michiel Lops
May 10, 2019
PSM II Class was wonderful
PSM II Class was wonderful - Thank you! The 4 instructors had a wonderful dynamic and energy between them that kept participants engaged and contributing throughout the sessions. They incorporated the participants knowledge and experience into the framework of their teaching and provided unique ideas and guidance for handling difficult situations.
Dorothea Horton
May 10, 2019
Fantastic class created as an…
Fantastic class created as an innovative and interactive experiance. No slides, all interactive and based on liberating structures.
Martin Hinshelwood
Apr 12, 2019
very interesting
thank you, it was a very interesting training on (not only) scrum master skills & views
Martin Schmid
Apr 7, 2019
Take it to the next level
The PSM 2 training gave me a deeper understanding of Scrum. I would recommend it to anyone, who wants to take Scrum Mastery ;) to the next level.
Spezial thanks to Barry & Christiaan!
Seb
Mar 25, 2019
Energising
Thank you Barry Overeem and Christiaan Verwijs for providing this energising two-day class! Looking forward for bringing all the learnings into practice.
Remon van den Eijnden
Mar 23, 2019
Very insightful
Very insightful, fun and inspiring. Very actionable.
Remco
Mar 1, 2019
It was an amazing 2 day class hosted by…
It was an amazing 2 day class hosted by Barry and Christian (The Liberators) and would highly recommend the class to other scrum masters wanting to go get a higher level of understanding of scrum and its values.
Mark
Feb 27, 2019
Barry and Christ facilitate this 2-days…
Barry and Christ facilitate this 2-days class really well. They added lots of fun games to small groups, and motivate us to have lots of reflection together after each game to think about how to put into use in the workplace. You will NEVER be bored with a professional group. Highly recommended.
SHU ZHOU
Feb 27, 2019
Practical Scrum by the book
Scrum by the book, yet entirely practical. The Scrum.org training takes participants on a journey through the real value of Scrum and Agile. The trainers provide profound insights and plenty of practical experience. Without resorting to theoretical ideology and dogma, they illustrate vividly the traps of zombie Scrum and ineffective pseudo-Agile thinking.
Stijn Decneut
Feb 22, 2019
De casusgerichte aanpak die erg…
De casusgerichte aanpak die erg interactief was, zorgde voor twee hele nuttige en leerzame dagen.
T de Mol
Christiaan's Certifications
Christiaan's Bio
As the co-founder of The Liberators, I aim to liberate individuals, teams & organizations from de-humanizing and ineffective ways of organizing work. Driven by a strong belief in the creativity and intelligence of people, and grounded in my learnings as a software engineer, Scrum Master and organisational psychologist, I am passionate about improving the profession of software development. As a Professional Scrum Trainer, I want to contribute by sharing experiences and insights, by developing and providing excellent Scrum training, by facilitating workshops and by contributing to a variety of events and meetups.
Find more resources here:
- Listen to our podcast on Spotify, iTunes, Stitcher or RSS. You can find us under ‘The Liberators Network’;
- Check out our event calendar for upcoming events, workshops and classes (or subscribe to the RSS-feed for our events);
- Check out our webshop for card games, exercise materials, buttons and other awesome materials;
- Sign up for our newsletter to stay-up-to-date with our writing, as well as upcoming events, workshops and classes;
- Join our meetup for everyone interested in Scrum, Agile and Liberating Structures
Languages
- Dutch
- English
Courses taught by Christiaan
See What My Students Say
Oct 26, 2021
excellent class
excellent class! powerpoint free, plenty excercises and great energy
Klant
Sep 27, 2021
Awesome training with many Liberating…
Awesome training with many Liberating Structures that increased the conversations between participants. Recomended!
Richard Acosta
Sep 27, 2021
Very interactive class
Very interactive class, where Barry and Christiaan share their comprehensive
knowledge and broad experience. For me I wanted to gain a better understanding of the scrum mater role and after this course I summarize it as follows: "A good scrum master knows how to walk the fine line between serving the team and leading the team".
Hertogs
Jun 28, 2021
Christiaan and Barry did a great job!
Christiaan and Barry did a great job at designing and delivering this training. Love how we worked a lot with Liberating Structures and that (almost?) every one of those exercises can be done with a scrum team. A wealth of knowledge and practical application thereof.
Pascal Clarkson
Jun 25, 2021
It was just amazing
It was just amazing. So much knowledge and room for own questions and interrpretations. Setting was great, happy to have done a F2F course again :) Thanks guys!
Sarah Janssen
Sep 17, 2020
Learning by doing
Really nice how many liberating structures are embedded in all the blocks of theory. Excellent teachers and facilitators, kudos to Barry and Chris. Thanks!
Ronnie Klanderman
Jun 25, 2020
Excellent training by the Liberators
Excellent training by the Liberators. I recommend it.
Guino Henostroza
Mar 9, 2020
Excellent!
Barry and Christiaan made this training an tangible and extremely worthwhile learning experience. I took a lot out of it, not just content-wise but also in how a brilliant training can be structured. Thank you for all the good memories and Aha! moments.
Elke Bethke
Jan 27, 2020
Training was amazing, but assessment sucks!
Training was amazing. I wish I could tell the same about PSMII assessment, but it was confusing, frustrating and make me angry, as big part of questions have nothing to do with topic and don't giving any hints in advance (budgeting questions, scaling questions, etc.).
If you want to test me on Scrum - go ahead. If you want to test me on practical implementation of theories in reality - your questions vague and suggest that for all organizations answer should be the same.
Yury Zaryaninov
Dec 19, 2019
A golden combination
The combination of Daniel Vacanti and The Liberators is golden. They give a great mix of theory and exercises. This class is a must for everyone working in a scrum environment.
Sven de Koning
Dec 14, 2019
The Class was excellent!
The Class was excellent!
Barry and Chris master the framework and are able to add experience and the Liberating Structures to the content. The result are two very interactive days that are filled with theory and practical exercizes.
And because the ‘students’ were very eager to learn and share, the Class got even more immersion.
The location in the Volkshotel in Amsterdam was very okay as well, with a good vibe and also good vegetarian lunch and sustainable snacks.
I got a lot new (and forgotten...) insights and take-aways.
Very well done and thank you very much.
Harold Schuringa
Dec 13, 2019
Awesome and practical
Awesome. I go back home with many ideas and useful tools. Definitely helpful to be a better Professional Scrum Master!
Olivier Ledru
Oct 21, 2019
Excellent class to deepen your understanding of scrum values & empiricism with great teachers! Thanks Barry & Chris!
Excellent class to deepen your understanding of scrum values & empiricism with great teachers! Thanks Barry & Chris!
Markus Broder
Sep 23, 2019
Energetic and thought-provoking PSMII class
I took part in the PSMII course with Barry & Christiaan. It was a thought-provoking and energetic class that really helps you to improve and consider your own Scrum experiences.
I would highly recommend the class.
Miss Lauren Holden
Sep 21, 2019
Awesome!
Awesome! It was great to learn from Barry Overeem and Christiaan Verwijs. I enjoyed the interactive class a lot! Lots of learnings and sharing with other great Scrum Masters! Thanks all!
Peter
Jul 3, 2019
These guys are very dedicated.
These guys are very dedicated. (Barry Overeem and Christaan Verwijs)
I love the interactive way of providing the training. My first "No Powerpoint" experience, however they used all these flipovers this was very helpful and inspiring.
The training generated a lot of ideas I have to exercise with my own clients.
"Job well done guys"
Dennis Olsthoorn
Jul 3, 2019
Great Training with awesome Trainers…
Great Training with awesome Trainers and Participants.
Florian Goldmann
Jul 3, 2019
I really liked the in dept topics
I really liked the in dept topics. The practical use of liberating structures and the energie from Barry and Christiaan.
Jochen
Jul 3, 2019
Great energy and fun
Great energy and fun. Nice new insights and always good to have conversations with other people and share views, perspectives, best practices and experiences.
This training provided a lot of opportunities to combine everything and learn (how) to improve.
Gerrit
Jun 29, 2019
Very insightful and interactive
Very insightful and interactive, it was full of real cases which really helped me get even better understanding, the kanban simulation game on day one was an awesome experience
Rasheed Raya
Jun 17, 2019
very interactive and fun way to learn
very interactive and fun way to learn
Christian and Jasper did a great job, very interactive way to learn about the scrum framework, with exercises and continue discussions with the group.
If I should mention something to improve, I would say It becomes at some point too much, as you really need to think and ask questions yourself with no always the assistant of the trainers.
In general, very productive, easy to understand and good opportunity to network !
Elena Sanz
Jun 17, 2019
Well run course with clear focus and…
Well run course with clear focus and learning.
Joram van Essen
May 23, 2019
Truely an nice addition to my skillset.
Truely an nice addition to my skillset.
Michiel Lops
May 10, 2019
PSM II Class was wonderful
PSM II Class was wonderful - Thank you! The 4 instructors had a wonderful dynamic and energy between them that kept participants engaged and contributing throughout the sessions. They incorporated the participants knowledge and experience into the framework of their teaching and provided unique ideas and guidance for handling difficult situations.
Dorothea Horton
May 10, 2019
Fantastic class created as an…
Fantastic class created as an innovative and interactive experiance. No slides, all interactive and based on liberating structures.
Martin Hinshelwood
Apr 12, 2019
very interesting
thank you, it was a very interesting training on (not only) scrum master skills & views
Martin Schmid
Apr 7, 2019
Take it to the next level
The PSM 2 training gave me a deeper understanding of Scrum. I would recommend it to anyone, who wants to take Scrum Mastery ;) to the next level.
Spezial thanks to Barry & Christiaan!
Seb
Mar 25, 2019
Energising
Thank you Barry Overeem and Christiaan Verwijs for providing this energising two-day class! Looking forward for bringing all the learnings into practice.
Remon van den Eijnden
Mar 23, 2019
Very insightful
Very insightful, fun and inspiring. Very actionable.
Remco
Mar 1, 2019
It was an amazing 2 day class hosted by…
It was an amazing 2 day class hosted by Barry and Christian (The Liberators) and would highly recommend the class to other scrum masters wanting to go get a higher level of understanding of scrum and its values.
Mark
Feb 27, 2019
Barry and Christ facilitate this 2-days…
Barry and Christ facilitate this 2-days class really well. They added lots of fun games to small groups, and motivate us to have lots of reflection together after each game to think about how to put into use in the workplace. You will NEVER be bored with a professional group. Highly recommended.
SHU ZHOU
Feb 27, 2019
Practical Scrum by the book
Scrum by the book, yet entirely practical. The Scrum.org training takes participants on a journey through the real value of Scrum and Agile. The trainers provide profound insights and plenty of practical experience. Without resorting to theoretical ideology and dogma, they illustrate vividly the traps of zombie Scrum and ineffective pseudo-Agile thinking.
Stijn Decneut
Feb 22, 2019
De casusgerichte aanpak die erg…
De casusgerichte aanpak die erg interactief was, zorgde voor twee hele nuttige en leerzame dagen.
T de Mol
Classes Attended by Christiaan
Christiaan has no visible classes.
Latest Blogs by Christiaan
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Christiaan Verwijs
What science tells us about how work agreements create high-performing teams. And five practical areas to focus on.
Aug 1, 2022
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Christiaan Verwijs
An investigation of scientific research into what motivates teams, and how many of these insights informed the Scrum framework and other Agile methodologies
Jun 24, 2022
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Christiaan Verwijs
An exploration of scientific insights. And four practical tips to encourage cohesion and coherence in your team.
Jun 1, 2022
Read blog
Christiaan Verwijs
A critical, evidence-based reflection on a hunch that Scrum Masters may often be more concerned with the quality of the process than the value of its outcomes.
May 18, 2022
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Christiaan Verwijs
Why many Scrum teams struggle with continuous improvement, and how you can do better
May 6, 2022
Read blog
Christiaan Verwijs
An exploration of the color theory of change, and how it illustrates a bias in our community that may explain our failure to enact meaningful change
Apr 29, 2022
Read blog
Christiaan Verwijs
An investigation of three schools of thought on team development and high-performing teams
Apr 7, 2022
Read blog
Christiaan Verwijs
A guide on how to act professionally by seeking out evidence to test what you believe to be true about Scrum, teams, and change
Feb 4, 2022
Read blog
Christiaan Verwijs
Surprising insights from scientific studies into when and why code smells are introduced, and practical recommendations for how to write better code
Dec 23, 2021
Read blog
Christiaan Verwijs
Insights from 7 scientific studies into what it is that Product Owners do and what makes them successful
Nov 24, 2021
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