Petar Tahchiev has been doing a lot for the open-source communities for the past two years. He has submitted patches for Ant, Maven, Cargo and other open-source projects. He is also one of the developers of the Jakarta Cactus project. Besides this he is working as a software engineer, represents the Bulgarian Java User Group (http://java-bg.net/) and teaches algebra and variety of other courses at the University of Sofia.
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