|Date of birth||17 April 1972|
|Place of birth||Tampere, Finland|
|Height||1.82 m (5 ft 11 1⁄2 in)|
|Playing position||Defensive midfielder|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
As a player he played in the position of defensive midfielder for TPV Tampere, FF Jaro, HJK and Tampere United in Finland, Molde, Lillestrøm and Moss in Norway, Stockport County in England as well as Hibernian in Scotland.
He has also appeared over 40 times for the Finnish national team.
After retiring in 2007 at the age of 35, he worked both as a youth coach and as a sporting director for Tampere United between 2008-2009. He also managed the Finnish U15-football team.
On 29 October 2010 it was announced that Wiss had succeeded the longtime head coach Ari Hjelm at Tampere United. He signed a two-year contract, with an option for a two-year extension, with the club on the same day. However, the club was banned from competition for the 2011 season.