Senny Nsona Mayulu was born on 17 May 2006 in Le Blanc-Mesnil, France. He came through Paris Saint-Germain's academy and signed his first professional contract on 20 May 2023, running through June 2027. He has progressed steadily through the senior matchday picture, accumulating 23 Ligue 1 appearances during 2025–26 with 4 goals and 4 assists.
His defining moment came on 31 May 2025: in the UEFA Champions League final against Inter Milan, Mayulu came off the bench to score the fifth goal in PSG's historic 5–0 win, becoming — at 19 years and 14 days — the youngest Frenchman ever to score in a UEFA club competition final. The cap was a Ligue 1 title alongside the European Cup as part of PSG's continental treble.
Mayulu has represented France at U18, U19, U20, and U21 youth international level, with full senior call-ups expected as his role expands.
A 1.85 m two-footed central midfielder, Mayulu combines work-rate, ball-progression carrying, and academy-honed technical balance — a profile that has positioned him as one of the most reliable young French midfielders developed entirely within PSG's senior pathway during the post-Mbappé era.