Danu started his career at Zaria Bălți, which was rebranded as FC Bălți in 2020. In December 2018 he was on trials for the under-19 team of Elche CF.[2] He joined Chindia Târgoviște in August 2024.[3]
International career
In February 2020 Danu played for Moldova U19 in the "Roma Caput Mundi" tournament, which reached the final.[4] He has played for Moldova under-17, under-19, and under-21 in the qualifying campaigns for the European Championships. He was called up for the senior team multiple times since September 2023.[5] On 19 November 2024 Danu made his debut for the senior team, as a 70th minute substitute in a friendly against Gibraltar, in which he got sent off after a second yellow card in stoppage time.[6]