In 2008, she started working as a solo clarinet player at Istanbul State Opera and Ballet Orchestra.
In 2012, after the world premiere performance of Fazıl Say – Hayyam Clarinet Concerto by Sabine Meyer, she did the world seconda performance in Eskişehir.
She performed Hasan Niyazi Tura – Clarinet Concerto Turkey Premiere.
She has been invited to the 40th Jazz Days in Germany, Freiberg City on April 24, 25 and 26, 2014 and she performed the Clarinet Concerto of Hasan Niyazi Tura and Leonard Bernstein “Prelude, Fugue and The Riffs” with the Mittelsachsischen Philharmonie Orchestra under the baton of General Music Director Raoul Gruneis, in the concert called “Classic meeting with Jazz”. After three concerts in Freiberg, Dobeln and Mittweida, “unique” and “silky” were the words used to describe her clarinet playing.
ln December, 2015, she had been invited to Hong Kong Festival Wind Orchestra to give a concert as a Buffet Crampon artist and there she performed the Clarinet Concerto of Hasan Niyazi Tura with her wind orchestra; after that she performed a masterclass together with Tom – Lee Music and Buffet Crampon.
In August 2016, she was a juror at the BUFFET CRAMPON CLARINET COMPETITION 2016 in Taiwan and there she also gave a recital and a three masterclass in Taipei, Tacihung and Kaohsiung.
On 25th of September 2017 she performed a recital at Buffet Crampon New York Showroom in NYC with a great success.
In October 13rd, 14th and 15th she performed Fazil Say Op 36 "Khayyam" Clarinet Concerto with the Brandenburgisches Staatsorchester Frankfurt under the batton of Howard Griffits in Germany for three solo concerts in Frankfurt (Oder), Postdam and Brandenburg.
In September 2018 she made Max Bruch Clarinet & Viola Double Concerto Op88 recording with Radio Symphony Orchestra Vienna under Howard Griffiths. CD will be released from SONY. Young talent violist Kyoungmin Park, who plays at Berliner Philarmoniker, was her partner on this album. Orpheum Foundation which supports young talents on the world stages supported this project. The CD released on 2019 October.
Ecesu Sertesen has chosen as the Jury in the prestigious 5th International Jacques Lancelot Clarinet Competition 2020.
In parallel to her solo works and chamber music career, she is still working as a Principal clarinet player at Istanbul State Opera and Ballet Orchestra.
Ecesu Sertesen is the official performing artist of Buffet Crampon brand.