The fact that you are here probably means that we either met at Developer Week (DWX13) or that you are interested in the things I presented there. Here is some Information about who I am and what I did at DWX13.

My name is David Tanzer and I am a freelancer from Linz, Austria. I work as a trainer, coach and consultant and I help teams to become/stay agile and develop better software. More information about me, including all the ways you can contact me, can be found on the home page of

I love getting mail! So, if you have any questions or you want to book me as a trainer or consultant - or if just want to get in touch:

Contact Me

DWX13 sessions

At the conference, I had two sessions. You can find some information about them and the slides I used here.

Konkurrenzfähig in die Zukunft

In this session I was talking about things that companies, teams and individuals can do to stay competitive in the future. Slides: KonkurrenzfaehigInDieZukunft.pdf To stay competitive as a company, you should try to become better at delivering features quickly and to attract great developers. A focus on increasing software quality can help you with both.

You can find a much shorter version of this talk here:

Other Links: Valve Handbook for New Employees

Offline Web Applications

In this session, I showed how you can write web applications that still work when the user is offline. For this you need a way to cache resources (“Appcache”) and a way to store significant amounts of data at the client device (“IndexedDB”). Slides: OfflineWebApplications.pdf

Some time ago I wrote a series of blog posts about this topic, you might be interested in them too: Offline Web Applications

IndexedDB Polyfill:, IndexedDB JQuery:

Other Resources

If you liked what you saw at DWX13 or in this blog post, you’ll probably also find my newsletter interesting.

Subscribe Here

Stay in touch by following me on Twitter: @dtanzer