Two years he work in the Cosmic Ray station on the Musala Peak (1964–1966)
J. Stamenov worked in Russia (1972–1975)
In the INRNE – BAS, he was research fellow (1976–1978), associate professor (1980), and professor (1987)
He headed research group (1982–1986) and Laboratory on "Astrophysics of ultrahigh energies" in the INRNE - BAS from 1987
He was deputy director (1989–1993) and director of the Institute for Nuclear Research and Nuclear Energy at the Bulgarian Academy of Sciences (1993–2010) and head of the Moussala Basic Environmental Observatory
Awards
J. Stamenov was elected a corresponding member of BAS (2004)
