Leaders

Albena Yordanova

Biology

Docent in the Faculty of Medicine of Sofia University "St. Kliment Ohridski". Leader of the National Biology Team since 2009. Member of the NSOTA 's Board of Directors.
Alexander Velinov

Linguistics

Leader and coach of the National (Mathematical) Linguistics team. He was a chairman of the Mathematics and Linguistics Section of the Union of Bulgarian Mathematicians in 2008, increasing the number of children involved in linguistics from 70 to 300, training teachers and creating new schools. He was a senior consultant at the International Linguistics Olympiad in Beijing 2014. He has trained students who have won more than 30 medals for Bulgaria since the International Olympiad, 6 of which are also in the Hall of Fame, two of them being declared a "dream team" with medals from each team member.
Alexey Stoev

Astronomy & Astrophysics
Anton Shikov

Informatics

He is an owner and manager of a small IT Company in Yambol, Bulgaria. Member of Bulgarian National Committee for Olympiads in Informatics since 2010. Former participant in IOI 1996 in Hungary and in BOI 1995 in Bulgaria. Leader of Bulgarian National team for several international competitions during last years. He is also teacher in local programing school in his hometown.
Asen Kyuldzhiev

Team Leader at the Young Physicsists' Tournament.
Bistra Taneva

Informatics
DANIELA TSEKOVA

Chemistry

Chief Assistant, PhD, Department of Analytical Chemistry, Faculty of Chemistry and Pharmacy at Sofia University "St. Kl. Ohridski ". Former participant in the 24th IChO - 1992, Pittsburgh, USA. Member of the National commission for organizing the Olympiad in Chemistry and participant in the preparation of the team for the International Olympiad in Chemistry since 2000. Head of the national team for participation in the International Mendeleevska Olympiad for students since 2005.
Daniela Damyanova Ivanova

International Young Physicists' Tournament & Astronomy
Donka Tasheva

Chemistry

Docent at the Faculty of Chemistry and Pharmacy of Sofia University St. Kliment Ohridski. Teacher of organic and bio-organic chemistry. Member of the National Commission for Organizing the Olympiad in Chemistry and Environmental Protection, Head of the ICHO participation team since 2004. Author of tasks for a district, a national round for the chemistry Olympiad, as well as a selective control for determining the team of Bulgaria for the International Chemistry Olympiad.
Emil Kelevedjiev

Informatics

Chief assistant at the Institute of Mathematics and Informatics of the Bulgarian Academy of Sciences. President of the National Commision for Informatics olympiads. Leader of the National Informatics Team since 2009. Member of the NSOTA's Board of Directors.
Emil Kolev

Mathematics

Doctor of Mathematical Sciences, Professor at the Institute of Mathematics and Informatics of the Bulgarian Academy of Sciences. Head of UchIMI since 2015. Since 1992 he has been involved with preparing students for competitions, olympiads and other competitions, working with talented children who want to pursue mathematics. He has been the head of the National Mathematical Teams since 1999 and is actively involved in the preparation of our Olympians.
Eva Bozhurova

Astronomy & Astrophysics
Hristo Chanev

Chemistry

Docent in the Faculty of Chemistry and Pharmacy of Sofia University "St. Kliment Ohridski". Chairman of the Bulgarian Comission for Organization and Preparation for Chemistry Olympiads. Leader of the National Chemistry Team since 2007. Director of the Chemistry laboratory "America for Bulgaria". Vice president of NSOTA's Board of Directors.
Iliyan Yordanov

Informatics
Ivaylo Kortezov

Mathematics
Katalina Grigorova

Informatics

Professor at Universityo of Ruse "Angel Kanchev". Leader of junior team in Informatics.
Krasimir Manev

Informatics

Prof. Krassimir Manev graduated from Faculty of Mathematics and Informatics (FMI) at the Sofia University with mathematics, with specialization in theoretical foundations of informatics. From 1976 to 2013, he taught Discrete mathematics, algorithms and programming at FMI at SU, and since 2013 he also teaches at New Bulgarian University (NBU). He has repeatedly been head of the Bulgarian teams for participation in International and Balkan Olympiads. He is a member of the International Committee of IOI in the periods 2001 – 2003 and 2006 – 2013 and is president of IOI in 2009, and from 2014 to 2017.
Lyubomir Zlatkov

Linguistics
Miroslav Abrashev

Physics

Professor in the Faculty of Physics at Sofia University. President of the National commission for the National competitions in Physics since 2005. Leader of the Bulgarian team in Physics since 2003.
Neno Todorov

Physics

Chief assistant at the Faculty of Physics of Sofia University "St. Kliment Ohridski". Member of the National Commission for Organizing the Physics Olympiad since 2014. Leader of the Physics Team. His students participated at the Romanian Master of Physics (2010, 2016, 2017 - Bucharest); European Physics Olympiad (2017-); International Physics Olympiad.
Nikola Karavasilev

Astronomy, Astronomy & astrophysics

Ph.d. at the Faculty of Physics of Sofia University "St. Kliment Ohridski". Leader of the National Astronomy Team since 2009. Competior in the International Astronomy Olympiad in 2003. Member of the NSOTA's Board of Directors.
Pavlin Peev

Informatics

Teacher of Informatics at Geo Milev High School in Stara Zagora.
PENKA VASSILEVA

Chemistry

She teaches lectures on general and inorganic chemistry. Involved in scientific researches with students, magistrates and PhD students. Prepares high school students for participation in national and international olympiads in chemistry. She is the head of Bulgaria's team for participation in international chemistry olympiads. She is an author of tasks and tests for competition exams and chemistry olympiads, as well as a textbooks for secondary education.
Peter Boyvalenkov

Mathematics

He is currently working at the Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences, where he is a professor of Algebra and number theory. He has been involved in olympiads since school age when he was a regular participant. In 2004, he joined as Deputy leader of the BOM Team, then as Team Leader, then as Deputy of the National Team, and now as Head of the National Team at IMO.
Radoslav Alexandrov

Biology

PhD student at the Institute of Molecular Biology at the Bulgarian Academy of Sciences. Leader of the national team in Biology in the past few years.
Rositsa Panayotova Dekova

Linguistics
Rusko Shikov

Informatics

He has been teaching at the Informatics School since 1978/9 known as "Shikovi". For years, he has been preparing national contestants in informatics, some of them with many international awards. He has a business in the IT sphere.
Snejana Tomova

Biology

Docent at the Biology Faculty of Sofia University. Leader of the national team in Biology.
Stanislav Harizanov

Mathematics

Stanislav Harizanov is an associate professor at the Institute of Information and Communication Technologies and the Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences. He was awarded the Gold Medal by the Second Junior Balkan Mathematics Olympiad (JBMO), Athens, Greece, in 1998. He also holds two thirds of the International Student Mathematics Olympiads. Participant in RSI - 2000. Head of Mathematics Teams for the Balkan and International Olympiads.
Stefan Gerdzhikov

Mathematics
Veselin Zlatilov

Linguistics

He graduated from the Faculty of Mathematics and Mechanics of the Sofia University "St. Kliment Ohridski "in 1986, specialty" Geometry ", then specializing in mechanics. From 2009 to 2013 he worked as an editor in mathematics at Publishing House "Prosveta - Sofia". Currently, he continues to work as a teacher of mathematics. He is also head of mathematical linguistics schools in elite metropolitan schools. In 2010, he was appointed as teacher of the year in mathematics.
Victor Ivanov

Physics

Associate Professor at the Department of General Physics, Faculty of Physics, Sofia University "St. Kliment Ohridski ". Co-author of textbooks for man and nature for the middle course and for physics and astronomy for the upper course. He is the head of the Bulgarian national team of physics and has won many medals at international physics Olympiads; Vice-Dean of the Faculty of Physics.
Zahary Donchev

Astronomy and Astrophysics