We are seeking a sound technician in Madrid to work on radio productions. Main responsibilities include recording, sound reinforcement, sound registration and post-production, applying radio-specific language. It is also required to select and use appropriate technical sources for each recording, operate digital mixing consoles such as DHD, and edit recorded materials according to the editor's instructions. Candidates must have knowledge of non-linear editing systems and hold a Higher Vocational Training qualification. Demonstrated experience in these roles, specific audiovisual qualifications, training in online audio editing, and experience in producing institutional, educational or informative reports will be valued. Familiarity with content management environments (MAM), particularly DALET and its editor ONE CUT, is considered an advantage. A temporary replacement employment contract is offered with a part-time schedule of 3.5 hours per day. Working hours are Monday to Friday from 10:00 to 13:30, and Tuesday to Thursday from 13:00 to 16:30. The salary is 1,000.74 euros gross per month.