He did not make his first official first team appearance for Shelbourne until 15 August 2005 when he made his League of Ireland debut coming on as a 2nd half substitute during a 1–0 defeat to Cork City at Turner's Cross.

[2] To aid Chambers with his development and to gain valuable experience, he was loaned out to Waterford United for the 2006 season and instantly became a regular in their starting XI.

He scored his first senior goal for Shelbourne with a delightful equaliser in a 1–1 draw with Monaghan United at Tolka Park on 13 April 2007.

He went on trial at Walsall, but was ineligible to play matches, so he joined Conference North side Solihull Moors on 16 January 2009 to get game time.

He scored nine goals, including the all-important opener against Bray Wanderers in the relegation play-off, a match which finished 2–0 to Drogheda United.

[9] Chambers showed spells of his League of Ireland form whilst playing in the SPL but Hamilton were relegated into the First Division, and he left the club after a year.

[10] Chambers impressed the Pats fans with his superb passing and found himself playing in a midfield role that saw him be the key to his sides attacks beginning.

He picked up the RTÉ man of the match award for his brilliant display including the assist for the opening goal by Chris Forrester against his old club and Dublin rivals Shamrock Rovers after the Saints ran riot and won 5–1 in a famous night.

He played in the 2012 FAI Cup final at the Aviva Stadium, as Pats lost 3–2 after extra time to Derry City.

In May 2010, Chambers made his Republic of Ireland under 23 debut against England C in the 2009–11 International Challenge Trophy at the Waterford Regional Sports Centre.