Career
He began his career at Scunthorpe United in the League One and Championship. He spent time on loan at N ottinghamshire County, and Grimsby Town, before making a permanent move to former loan club Rochdale in 2012. Scunthorpe United
Born in Derby, Derbyshire, Lillis worked his way through Scunthorpe United"s youth system, and made his début as a professional at Millwall on 22 December 2006.
He spent most of his time at the Iron as the understudy of Joe Murphy, but has improved under the coaching of former Sheffield Wednesday stalwart Kevin Pressman.
In January 2009, Lillis went to N ottinghamshire County on a one-month loan in order to experience more first team action. He made his début in 2–2 draw with Aldershot Town on 20 January 2009.
His first clean sheet for the Magpies came on 14 February where N ottinghamshire County beat Barnet 2–0. He returned to Scunthorpe making 5 appearances and 1 clean sheet.
On 1 September 2009, he signed for Grimsby Town on loan as cover for injured Nick Colgan.
He made his début on 5 September 2009 against Portuguese Vale, in a 4–0 defeat. He played four appearance before returning to the Iron. On 30 October he joined Rochdale on an emergency seven day loan.
In July 2010, he was loaned to Rochdale again for six months.
Lillis returned to Scunthorpe at the end of his loan spell, but found his chances limited at Glanford Park and was released in May 2012. Rochdale
On 12 June 2012, Rochdale announced that he had signed a two-year deal to return to Spotland where he had previously had a successful loan spell.
After impressive displays in Rochdale’s 2013/14 promotion campaign, Lillis has since committed himself to Rochdale for a further two years. He is the son of former Scunthorpe United player and assistant manager Mark Lillis.