In 1835 he became concert master ("Konzertmeister ") at the Gewandhaus in Leipzig and in 1843 professor of violin ("Violinlehrer") at the Leipziger Konservatorium.
In 1835 he became concert master ("Konzertmeister ") at the Gewandhaus in Leipzig working with Mendelssohn. In 1843 David became a professor of violin ("Violinlehrer") at the Leipziger Konservatorium.