He made his triple debut in Paris at the age of 15 by conducting his 1st Symphony and playing the Violin Concerto of Mendelssohn on 26 May 2019 with the Orchestre Sinfonietta at the Théâtre des Variétés.

[12][13][14] At the age of 20, he received his master's degree[2] with distinction from the class of Sarah Nemtanu, concertmaster of the Orchestre National de France.

His Master's thesis[16] at the Paris Conservatoire focused on raising awareness of environmental sustainability through collaboration between classical music and other forms of art.

[24] In 2021, Elci-Ozsoy performed at the Centenary Festival of the American Fontainebleau Schools of Art and played at several concerts including one with Martha Argerich.

[26] Elci-Ozsoy's performance of Ravel's Tzigane was featured at the Young Artists Showcase of the WQXR hosted by Midge Woolsey on 15 February 2023 dedicated to the Fontainebleau Conservatory's 2021 Centennial Celebration.

[38] In April 2023, he collaborated with the Jeunes Talents Association in Paris to organize a benefit concert to raise and donate funds to UNICEF for helping children affected from the earthquakes in Turkey and Syria.

[41] An interview and performance by Elci-Ozsoy after the concert were featured on the award-winning[5][16] 'Soul Music,' produced by Maggie Ayre on BBC Radio 4, on November 11, 2023.

All proceeds of the concert were donated to UNICEF to support their response to children in Suriname's interior impacted by the consequences of climate change.