This research project looks beyond linguistics, endeavouring instead to elucidate human meaning-making processes, and more specifically how people account for their experiences of lan guage use. The focus is on the experiences of language users in a professional context in the field of engineering. There was a conscious decision to refrain from inquiring into the experiences of using any specific languages the aim being to reach to the plurilingual language potential of the participants in this project. The theoretical framework here is phenomenological. The report consists of four articles and a summary section. The data for the research were collected in two stages from the employees of a medium-sized Finnish engineering company with international operations: first 12 engineers were interviewed in 2006 and three years later in 2009 seven engineers were selected for a second interview.