Kadir was born in Mulhouse. From a young age, he developed a passion for theater and laughter, seeking to bring joy to those around him. At the age of 8, his mother enrolled him in theater classes, marking the beginning of a promising artistic journey. This formative experience allowed him to open up to the world and forge an identity enriched by his personal history and the significant encounters he made over the years.

At 16, Kadir joined the conservatory in Colmar, where he distinguished himself through his commitment and talent. Under the guidance of inspiring teachers, he had the opportunity to participate in memorable projects, notably in plays such as "Roberto Zucco," "Romeo," and "Hamlet," which left an indelible mark on his memory. In 2016, he joined the Acting Studio in Lyon, where he deepened his skills during a year rich in learning. In 2019, he continued his training at the National Theater School of Strasbourg for three years, during which he had the chance to work with renowned directors such as Dominique Valadié, Stanislas Nordey, Jean-François Sivadier, Olivier Py, and Claude Duparfait.