[1] Jeitziner played his youth football with FC Basel and advanced to their first team during their 1980–81 season under head-coach Helmut Benthaus.
Jeitziner played his domestic league debut for the club in the away game in the Charmilles Stadium on 9 Mai 1981 as Basel were defeated 1–2 by Servette.
Together with his team-mates Jörg Stohler and young striker Beat Sutter, Jeitziner was again team's joint top league scorer, each netted seven times.
For Basel's 1983–84 season Ernst-August Künnecke was appointed as head-coach and although he was known for his good work with the youngsters, the team slipped into the midfield of the league and the club started suffering financial problems.
Jeitziner signed for reigning Swiss champions BSC Young Boys and played for them for three seasons, but the team could not repeat their success.
During Basel's 1993–94 season, under head-coach Claude Andrey, his team mates were the likes of Swiss international goalkeeper Stefan Huber, defenders Massimo Ceccaroni, Marco Walker and Samir Tabakovic, the midfielders Mario Cantaluppi, Reto Baumgartner, Admir Smajić and Ørjan Berg and the Swiss international strikers Dario Zuffi and Philippe Hertig.