 In 1972, he joined the children's programming department as well as the France Inter radio station.In 1974, he became a journalist at the TF1 television network.After a period at the National Audiovisual Institute (INA), Leymergie worked as a journalist in the children's programming department of Antenne 2 from 1978 to 1984, where he produced programmes such as "Disney Dimanche" in 1979 and "Récré A2" in 1980.