During his college years Waltman also played for the Yakima Reds in the USL Premier Development League.
[1] In April 2004, Waltman signed with the Seattle Sounders of USL First Division where he spent the season as a backup goalkeeper.
On October 18, 2004, the Chicago Storm of Major Indoor Soccer League (MISL) announced they had signed Waltman on loan from the Sounders.
In September 2006, he signed a three-year contract extension with the Storm, was traded two days later to the Detroit Ignition in exchange for Jim Larkin.
For the Riverhounds Waltman collected 5 wins, 4 shutouts, and had a GAA of 1.27, He was 3rd in the league with 61 saves and received one Team-of-the-Week recognition.
Waltman made multiple key saves in all three games, stopping point-blank shots with his hands and his legs.
To top off Waltman's efforts in February, he scored a three-point goal in the Comets' last game of the month, in Chicago on the 26th.
In June 2015, Waltman signed with the Tacoma Stars of the Major Arena Soccer League.