Lateiner got his start writing for theater in Iasi, Romania around the start of 1878, when Isrel Grodner, having left Abraham Goldfaden's Bucharest company, needed a playwright. He added some topical material to a comic German story Nathan Schlemiehl, and came up with a play Die Tzwei Schmil Schmelkes (The Two Schmil Schmelkes). By showing that Goldfaden was not the only person who could write a successful play in Yiddish, he opened the floodgates for other Yiddish playwrights."