This report aims to present the activity carried out during the six-month internship at the company AP Portugal, in the second year of the Master's Degree in Specialised Translation and Interpreting of ISCAP (Instituto Superior de Contabilidade e Administração do Porto) in the academic year 2021/2022. It is carried out a theoretical analysis of the concepts that are an integral or complementary part of the post-edition process of machine translation. The company, AP Portugal, is presented with its services and the business structure. There are presented the tasks carried out during the curricular internship and the competences acquired during it, highlighting the challenges encountered during the internship and the ways found to overcome them.