Stefan Roock

Vorträge „Innovation – das wahre Bottleneck?!“ auf der OOP 2012

Auf der OOP 2012 habe ich einen regulären Vortrag sowie ein Pecha-Kucha zum Thema „Innovation – das wahre Bottleneck?!“ gehalten. Die Folien für beide Vorträge finden sich inkl. Foliennotizen auf Slideshare: Folien zum regulären Vortrag Folien zum Pecha Kucha Video des Pecha Kucha Inhaltlich geht es darum, dass meiner Meinung nach viele Produkte / Systeme…
Self selected Product Owners and ScrumMasters

One of my clients (serving several customers with custom made solutions) decided to introduce Scrum. They grouped people together that worked in the same projects or for the same customers. The result were three Scrum Teams. The next step was challenging. Who should be the ScrumMasters and who should be the Product Owners? Should there…
The Shu, Ha, Ri of Scrum

Shu Ha Ri „is a Japanese martial art concept, and describes the stages of learning to mastery.“ (see [1]) Aikido master Endō Seishirō shihan stated: „It is known that, when we learn or train in something, we pass through the stages of shu, ha, and ri. These stages are explained as follows. In shu, we repeat the forms and discipline ourselves so that our bodies absorb…
Buchtipp: The Lean Startup

Wie können wir schneller lernen, ob Produktideen erfolgreich sein können oder nicht? Dieser Frage geht Eric Ries in seinem Buch „The Lean Startup“ nach. Er fordert sogenanntes „Validated Learning“: Man formuliert seine Annahmen in der sogenannten Customer-Problem-Solution-Hypothese (welche Anwendergruppe hat welches Problem und wie gedenken wir es zu lösen) und definiert ein „Minimal Viable Product“…
G Forces, Release Cadence and Feedback Cycles

When I saw the G Forces presentation by Kent Beck at the Lean Kanban Central Europe conference had an insights that wasn’t that clear to me before. For those who don’t know the G Forces presentation: it is all about shortening release cycles from months to weeks to days to hours to minutes. What became…
Open Letter to some of our Thought Leaders (regarding bashing)

Open Letter to some of our Thought Leaders Dear Thought Leader, I really appreciate what you did for our community and the progress of our industry in general. But sometimes I am puzzled. That happens when you bash an idea or even worse a person. The ideas you had and the concepts you developed are…
Scrum, Kanban and Naked Planning

Some teams start with Scrum, excel with it and then adapt Scrum to go even further. Some of these teams dismiss interations and claim to do Kanban. Other teams start with Kanban, eliminate columns of their Kanban board, reduce WiP and increase teamwork. The results are very similar: There is a short backlog of things…
Vom Entwickler zum Berater und glücklich dabei

Anfang September auf der SoCraTes-Konferenz stellte sich ein Teilnehmer mit diesem Satz vor: „I love to code, but I have to coach.“ Viele Anwesende stimmten durch Gemurmel oder eindeutige Gesichtsausdrücke zu. Es findet sich hier ein durchaus gängiges Muster. Ein sehr guter Entwickler wird zum Coach, weil nur so höhere Gehälter zu erzielen sind. Und…
Single Piece Flow in Scrum Teams

Here is an easy to apply tip to improve your velocity: Focus on the User Story with the highest priority using Single Piece Flow (aka One Piece Flow) on a team level. How it works Single piece flow means that the whole team works at one User Story at any given point in time. Only…
S.O.L.I.D. for dynamic and functional languages at SoCraTes 2011

At the SoCraTes 2011 conference I facilitated a session about applying the S.O.L.I.D. design principles to dynamic OO languages and to functional languages. I prepared some Flipcharts with the SOLID principles (Slideshare), code examples for Java, Ruby, Scala and Clojure (GitHub) and a paper with a description of the SOLID design principles and some thesis about…