He played college football for the Saginaw Valley State Cardinals, and was selected by the Green Bay Packers in the seventh round of the 2014 NFL draft.

In 2012, he started all 11 games and was second in the nation with 106 receptions and led all DII players with 1,635 receiving yards, both of which set new SVSU single season marks.

[7] Janis was selected in the seventh round (236th overall) by the Green Bay Packers in the 2014 NFL draft.

[11][12][13] Janis was the first Saginaw Valley State Cardinal drafted since offensive guard Todd Herremans in 2005, and the first wide receiver in school history to be drafted, though his early role on the team was more on the special teams rather than taking snaps at wide receiver.

[14] Janis made his NFL debut on September 28, 2014, against the Chicago Bears, but he recorded no official statistics.

[1] 101 of these yards came on the game-tying drive to end regulation; he also caught a 60-yard pass on 4th and 20 from the Packers' 4-yard line to set up the tying score.

[19] On August 10, 2016, Janis fractured at least one of the bones in his right hand during a ball-security drill at Packers training camp.