[4] He made his first team debut in a 1–1 league draw against Lokomotiv Plovdiv on 19 July 2014, coming on as a second-half substitute.

[11] On 19 June 2017, Kraev signed with Danish Superliga side Midtjylland on a five-year deal for a reported fee of €500,000.

On 22 June 2019, Kraev was sent on a season-long deal at the Portuguese Primeira Liga team Gil Vicente.

[19] On 11 January 2021, Kraev was sent on a loan with option to buy to Portuguese Primeira Liga team Famalicão, until the end of the season.

[22] Kraev made his Phoenix debut on 3 August, scoring in a 4–0 win over Devonport City Strikers in the Australia Cup.

[27] In November 2016, Kraev received his first call-up to the senior Bulgaria squad for a 2018 FIFA World Cup qualifying match against Belarus.

[29] On 25 March 2017, Kraev made his complete debut for the team coming on as a substitute during the 2–0 home win over Netherlands for the 2018 FIFA World Cup qualification.