Desarrollador (Developer) es una persona que crea o edita varios aspectos del código de Moodle.
Moodle is Open Source and has many tools to assist and coordinate developer's efforts. There is a section in MoodleDocs which is devoted toDeveloper documentation. The MoodleDocs wiki has a namespace called Development and also uses a Developer category. There are many Moodle forums where developers participate, including Section 4. Developers also use Tracker that is used to track bugs, improvements and suggestions for new Moodle features at http://tracker.moodle.org. From time to time there are Developer meetings.
Developer documentation - a good starting point for developers