Career
Litex Lovech After he led Spartak Plovdiv for one season, he became an assistant at Litex Lovech under Ferario Spasov. He remained in this role for years. Ludogorets Razgrad On 31 July 2014, he replaced Stoycho Stoev following his sacking from Ludogorets after a 0:0 home draw with Partizan Belgrade in a Champions League qualifying match.
Before this Georgi worked with Stoev and Ivaylo Petev as an assistant manager since 2011.
On 27 August 2014, Dermendzhiev became the second Bulgarian manager (after Stanimir Stoilov in 2006) to qualify a team from his country to the group stage of the Champions League. He resigned from the team on 31 May 2015, but after Ludogorets was unsuccessfully led by his successors Bruno Ribeiro and Eduard Eranosyan, he was appointed again as manager on 6 November.
Player honours Manager honours Ludogorets Razgrad Bulgarian A Group: Champions (1): 2014-2015 Bulgarian Supercup: Winners (1): 2014 in Bulgarian football (1): 2014.