This study investigates how knowledge, skills and competences obtained during science communication postgraduate programmes impact alumni's experience in entering the workforce and in practicing their roles. Spanish programmes have been analysed with a double methodology: semi-structured interviews with programme directors (12 out of a total of 13) and a survey for programme alumni (134 answers). Results show that programmes are useful for alumni to find and practice a job. Teachings that are the most useful for alumni to find and practice a job, as well as programme shortcomings, are identified.