She was born in
Sofia, and represented the club
CSKA Septemvrisko Zname during her career. In the 1970s and 1980s she was a prolific competitor at the European Indoor Championships. She finished sixth at the
1975 European Indoor Championships, clocking in only 2:20.3 seconds, but then won the gold medal at the
1976 European Indoor Championships. She edged out countrywoman
Lilyana Tomova with 0.4 seconds, and Bulgaria almost managed a gold-silver-bronze constellation, but
Ivanka Bonova lost the bronze medal to
Gisela Klein. She won another gold medal at the
1979 European Indoor Championships, 0.3 seconds ahead of
Anita Weiß, and finished sixth at the
1982 European Indoor Championships. She also won the 800 metres event at the
1979 IAAF World Cup. In winning her medals at the 1976 and 1979 European Indoor Championships, she was a part of a strong tradition of Bulgarian 800 metres runners, who won medals at the European Indoor Championships in
1972,
1973,
1975,
1976,
1977,
1978 and
1979. Other than Shtereva, these medals were taken by
Svetla Zlateva (1972),
Stefka Yordanova (1973),
Rositsa Pekhlivanova (1975),
Lilyana Tomova (1976) and
Totka Petrova (1977, 1978). Shtereva also competed in the Olympic Games twice, in
1976 in
Montreal and
1980 in
Moscow. Both times she competed in both 800 and 1500 metres. In the
1976 Olympic 800 metres event she started by finishing second in the initial heat with 2:01.02 minutes, then second in the semi-final with 1:57.35 minutes. In the
1976 Olympic 1500 metres event Shtereva reached the final as well, after a fourth place in the heat and a second place in the semi-final. In the final round she finished fourth with 4:06.57 minutes, despite having clocked in 4:02.33 minutes in the semi-final. In the
1980 Olympic 800 metres event she achieved similar results in all the three rounds. She first ran in 1:58.83 minutes to finish third in round one, and in 1:58.87 minutes to finish fourth in the semi-final. In the final she ran in 1:58.71 to finish seventh. In the
1980 Olympic 1500 metres event she ran in 4:08.25 minutes in the first round, better than in the equivalent round of the 1976 Olympics, but this time it was not enough to progress from the heats. ==Domestic titles==