The objectives of this study are to analyze the (re) construction of the socio-cultural identities of a northeastern migrant in Rio de Janeiro that emerge in his life story and reflect on the socio-historical-cultural migration process in Brazil, particularly from 1930, and its relations with the situations experienced by the migrant in Lagoa da Roça, Paraíba, and Rio de Janeiro, city to where he migrates. This study is developed in a sociointeractional perspective, analyzing the speech from the socio-cultural and interactional concepts of identity, informed by the micro and macro speech. The data for analysis consist of two recordings on audio, obtained through interview research, following the tradition of qualitative and interpretative research. S. Francisco, the interviewee, is 50 years old and has been a doorman for twenty-eight years in the building where the interviews were conducted. He migrates to Rio de Janeiro seeking better job opportunities. In the analysis, the interviewee`s positions are focused in view of the narratives, explanations and chronics about the process of migration, family, work and friends set in his story, which are constructed in interaction with the interviewer. The results of this study show how conflictuous has been the process of the sociocultural change in that northeastern migrant life, who constructs the identity of an agentive man, whose actions are moving towards his autonomy in the countryside, while in Rio de Janeiro, S. Francisco shows to be more passive, with less initiative and without defined expectations.