Federkeil retired from professional football in 2009 following a series of concussions, but returned to sign with the Stampeders in 2013 after his CFL rights were traded.

He was a five-year player who was standout on defensive line who had 111 career tackles, 20 for losses, and 13 sacks and started eight games as a fifth-year student.

He was Canada West nominee for J.P. Metras trophy as CIS Lineman-of-the-Year and was unanimous conference All-Star and second-team All-Canadian choice.

Started at right guard against the San Diego Chargers on January 3, 2009, in a wild-card playoff game.

During the 2009 NFL season Federkeil played in six games as a back-up offensive tackle and member of the special teams unit before being placed on injured reserve on November 22, 2009.

On April 8, 2013, the Calgary Stampeders of the Canadian Football League acquired the rights to Federkeil after trading non-import linebacker Akwasi Antwi to the Toronto Argonauts who had drafted him in 2006.