 Lupescu, son of the late Romanian international Nicolae Lupescu, began his career in 1975 in the youth of Admira Wacker, the club where his father played until his retirement.In 1977, he moved to Mecanică Fină a club where his father Nicolae started his coaching career, before moving to Dinamo Bucharest in 1982.He made his Dinamo debut at the age of 17 in the Divizia A on 21 September 1986 in a 4–1 victory against SC Bacău.