Later he played professional football in the French Ligue 1 with FC Hyères (1932–1934), AS Cannes (1934–36), Racing Strasbourg (1936–38) and Red Star Olympique (1938–39).

[1][4] He started his coaching career in France with AS Cannes (1948–49) and from there continued to AS Monaco (1950–1952) and Le Havre AC (1952–53).

In 1955, he was appointed as manager by then German champions, Rot-Weiss Essen coaching among others Helmut Rahn there.

From July 1965 to June 1968 Schwartz coached – as successor to Ivica Horvat – Eintracht Frankfurt in the German Bundesliga.

In the 1972–73 season, Schwartz coached TSV 1860 Munich, but he could not help them to fulfill their aspirations to return to the Bundesliga after then three years of absence.

[citation needed] In 1996, he was invited by the Royal Dutch Football Association to the inauguration of the Amsterdam Arena.