Darlan A. dos Santos has been working with the java technologies since 2000. He has a wide experience in open source Java technologies. He has worked on many large-scale J2EE projects for government and company. He is currently working as software architect in Northeast Bank in fortaleza - CE Brazil, but have also worked in São Paulo, Brasília, Campina Grande and João Pessoa. He is SCJP, SCWCD, SCDJWS, SCBCD and SCEA.