Joomla! Documentation™

A code sprint is a dedicated session in which a group of volunteers come together at a geographic location to work on code for the Joomla project. Examples of code sprint sessions could include UI/UX improvements, working on new features, or long term planning and architecture work. Typically, six to ten experienced individuals will be brought together for two days for these events. If you wish to form your own sprint then read the policy

The code sprints are organised by the Joomla community together with the Production Leadership Team. These events are supported by the OpenSourceMatters and other sponsors.

Code Sprints in 2013:

• Rapid Application Development Code Sprint, July 2013, Pistoia, Italy
• Code stability and bug triage Code Sprint, Aug 2013, Nashville, Tennessee, USA.
  

More info: http://community.joomla.org/blogs/leadership/1757-call-for-participants-for-code-sprint.html

Code Sprints in 2014:

• Architecture Sprint, Feb 8-9, San Jose, California, USA.
• JUX Sprint, July 8-9, More info: http://developer.joomla.org/cms/user-experience/610-jux-code-sprint-report.html
• Bug Clean Up Sprint, July 26-27, More info: http://magazine.joomla.org/issues/issue-aug-2014/item/2228-joomla-bug-sprint-in-manchester
• Code Style Code Sprint, Oct 11-12, Madrid, Spain. More info at: http://magazine.joomla.org/issues/issue-nov-2014/item/2353-two-joomla-code-sprints
• Code Testing Code Sprint, Oct 14, Montabaur, Germany. More info at: http://thephp.cc/viewpoints/blog/2014/10/joomla-phpunit-code-sprint

Code Sprints in 2015:

• Joomla 4 Architecture Sprint, July 10-12, Odense, Denmark. More info at: http://volunteers.joomla.org/reports/115-joomla-4-architecture-sprint-odense-dk
• Joomla 4 UX and Architecture Sprint, October 10-12, Athens, Greece.
• Joomla! Automated Testing Code Sprint, October 28th - November 2nd, Karlsruhe, Germany.
  

More info at: https://magazine.joomla.org/issues/issue-december-2015/item/2912-the-joomla-automated-testing-code-sprint-2015