Bittner signed for Fulham in 2000 from Swindon Town by then manager Jean Tigana and spent two years at the club.
The club is financially sound now and with the gaffer (Dave Hockaday) and the chairman (Dale Vince) on board – the future is really bright."
"[5][6] Bittner left for Hereford United in 2012, making 42 appearances, before joining Newport County on a short-term contract.
[10] In July 2015 Bittner signed a new player/coach contract with Plymouth Argyle after agreeing to take the role of the club's new goalkeeper coach under new manager Derek Adams.
Plymouth won the match 3–1 [15] In June 2017 Bittner signed a one-year contract extension and he was released by Newport at the end of the 2017–18 season.
On 2 July 2024, Bittner followed former Cheltenham Town manager Darrell Clarke to Barnsley, joining the first-team coaching staff.