In March 2015, Belchev was appointed as manager of his hometown club Haskovo, succeeding Emil Velev.

[2] On 27 November 2016, following the resignation of Edward Iordănescu, Belchev was appointed as interim manager of CSKA Sofia.

[3] On 3 January 2017 he was appointed as a permanent manager of the team, signing a contract until the end of the season.

[5] On 6 March 2019 Stamen Belchev was appointed as the new manager of Arda Kardzhali, after Stoev was signed with the Bulgarian champions Ludogorets Razgrad.

[6] After a successful period that culminated in the team's first ever promotion to the top flight of Bulgarian football, he parted ways with the club by mutual consent in April 2020.