Jenys, 19 (4/2/96), collected 45 points (15-30=45) and 45 penalty minutes (PIM) in 63 games during his first season of hockey in North America with the Sudbury Wolves of the Ontario Hockey League (OHL) in 2014-15. The 6-foot-3, 190-pound native of Brno, Czech Republic, led Sudbury in scoring, ranked T-1st in assists and T-2nd in goals. He signed an Amateur Tryout Agreement (ATO) with the Iowa Wild of the American Hockey League (AHL) on March 24 and recorded three assists in eight games with Iowa. Jenys tallied two goals in 29 games for Brno Kometa in the Czech Republic League and 19 points (13-6=19) in 26 contests in the Czech Republic Junior League in 2013-14.

He was selected by Minnesota in the seventh round (199th overall) of the 2014 NHL Entry Draft.