Nadiya Volodymyrivna Dorofieieva (Ukrainian: Надія Володимирівна Дорофєєва; born 21 April 1990), professionally known as DOROFEEVA, is a Ukrainian pop singer, fashion designer, blogger, actress and a former member of the pop duo Vremya i Steklo, which was created and produced by Potap.

In 2004, she won the first prize in the "middle category" of the Black Sea Games children's singing competition in Skadovsk.

[6] After her American dream fell apart, Dorofieieva developed her own solo project, which was called Markiza, in which she took a similar pop rock style to Avril Lavigne.

[8] Dorofieieva passed the internet casting to become the female soloist in the duo Vremya i Steklo, alongside rapper Oleksii Zavhorodnii (Positiff).

[2] In December 2010, the duo released their first single, which only acquired mild commercial success in their native Ukraine.

In the subsequent years, Dorofieieva toured Ukraine with Vremya i Steklo alongside Potap & Nastya.

In 2018, Dorofieieva and her colleague Oleksii Zavhorodnii voiced the heroes of Ukrainian animation film – "The Stolen Princess".

[14] In November 2020, Nadya Dorofeeva announced the start of her solo career after the breakup of the duo "Vremya i Steklo".

After the Russian invasion of Ukraine began, she switched to performing in Ukrainian and changed her artistic direction.