Peiser made his top flight debut in the 2003–04 campaign, only missing four Liga I games as FC Rapid București finished in third position. He returned to his country for the following four years, spending two apiece with Troyes AC and FC Gueugnon and being part of the former team's Ligue 1 roster in 2005–06 (no league appearances).
On 9 July 2014, Peiser signed with his first non-European club, joining Ottawa Fury FC of the North American Soccer League.[5] In July of the following year, he broke a record in the competition – in both the original and modern-day incarnation – for the longest shutout record.[6]