[2][3] He was brought at Sportul Studențesc București from junior club CSȘ Pajura, making his Divizia A debut on 4 April 1981 in a 2–0 victory against Universitatea Craiova.
[2][3][4] Afterwards, he had some heart problems, which kept him off the field for two years, until Ilie Hagioglu, the president of Divizia B club, Dunărea Galați noticed him in a friendly and gave him the chance to play for his team.
[2][3][5] In the middle of the 1987–88 season, he was transferred at coach Mircea Lucescu's team, Dinamo București in exchange for Marian Damaschin, where in his first season he scored 22 goals in 16 Divizia A games, including six goals in a 9–1 victory against CSM Suceava and a brace in a 3–3 with rivals Steaua București.
[2][3] Claudiu Vaișcovici played 10 matches at international level for Romania, making his debut on 8 April 1987, under coach Emerich Jenei in a friendly which ended with a 3–2 victory against Israel.
[13][14] He played three games at the successful 1990 World Cup qualifiers, without being selected to be part of the squad that participated at the final tournament.