Skandalis was born in Sydney, New South Wales, Australia. The Skandalis family home in Lightning Ridge burnt down when John was six, causing the family to move to Ashfield, and later Minto. Skandalis' mother died when he was in his teens, leaving his father to raise Skandalis and his sisters. He was "taken in" by Josie McGuinness, the mother ofKevin and Ken McGuinness, who, he says, "treated him like son."
Playing career
Skandalis was the last original Western Suburbs player remaining at the Wests Tigers club after the merger in 2000. He signed on for the Magpies in the early 1990s after playing out his junior years with the Minto Cobras, and attending Sarah Redfern High School. His first grade début came in round 9 of the 1996 season against the Penrith Panthers on 17 May. He made 10 appearances that season, including the Magpies last ever finals appearance against Cronulla on 6 September. A regular in the starting team in 1997, Skandalis scored 3 tries from his 20 appearances. He scored his first in the 24 May match against the Gold Coast Titans, as they won 26-10. With the decline of the Magpies, Skandalis played in 34 games in the next 2 seasons, with only 5 being victories. He scored the first try for the Wests Tigers in 2000. Skandalis was known for his workhorse attitude and his never say die approach to rugby league and as the years progressed his performances gradually caught the attention of representative selectors. This was seen in both the 2002 and 2004 seasons where Skandalis was dually awarded with his first representative call up for City team in the annual City v. Country fixture. Skandalis was named the Wests Tigers' player of the year in 2002. Skandalis was a member of the Wests Tigers team which won the 2005 NRL Grand Final against the Cowboys. He was named in the Big League team of the year for the 2005 NRL season. As NRL Premiers Wests faced Super League champions Bradford Bulls in the 2006 World Club Challenge. Skandalis played as a prop forward in the Tigers' 30-10 loss. Skandalis held the record for the most first grade games for the Wests Tigers with 185 appearances. In 2012 the record was surpassed by Chris Heighington, though Skandalis had previously played 64 games for Wests Magpies before the club merged. On 14 June 2006, Skandalis signed a two-year contract to play in the Super League with the Huddersfield Giants, starting from the 2007 season. In 2008, Skandalis was made vice-captain of the squad, alongside Ryan Hudson. He led the team out against Wigan when regular captain Chris Thorman was injured. Skandalis returned to Australia at the end of the 2008 season following a knee injury, picked up early in the season, which prevented him from participating further. Skandalis took up a post with Wests Tigers Youth Development. In 2009, Skandalis was named in the Wests Magpies NSW Cup side, but was recalled to the Wests Tigers team from round 11, after injuries to other players. He remained in the first grade team for the rest of the season. After the end of the 2009 season, Skandalis announced he would be retiring and taking up the position of strength and conditioning coach with the Wests Tigers NYC team. However, Skandalis returned to play for the Magpies in the middle of the 2010 season, and then, in July, made a shock comeback with the Tigers, coach Tim Sheens saying, "I can't get rid of the guy." Playing another 5 games, he fell just short of making his 250th NRL appearance. He is the oldest player to have played at the club, being 34 years and 73 days old in his last appearance for the club. The inaugural "Philips Sports Dad of the Year" was awarded to Skandalis in late 2009, narrowly defeating Brett Kimmorley. He donated the money to the Starlight Children's Foundation. Skandalis has been made a life member of the Western Suburbs club. Skandalis' Greek heritage made him eligible to represent Greece, which he did as captain. He played for Greece in the 2009 Australian Mediterranean Shield. Greece won the final 34-14 against Italy.
Post-playing career
Having spent 2 years with the Wests Tigers' NYC team, in 2012 Skandalis became the club's head conditioner. He was removed from the position with the arrival of new coach Jason Taylor in 2014, but remained in the club in other roles. In 2017, he became an assistant to the Wests Magpies ISP coach, former teammate Brett Hodgson. Skandalis has been involved in the Macquarie Fields Finding Jobs, Changing Lives program, helping troubled youth from the Macquarie Fields area. He was made an NRL ambassador in 2017.
