A midfielder for Scotland's Alloa Athletic Football Club since 2012, Simmons was previously a member of the Queen of the South; Raith Rovers; Dunfermline Athletic; and Heart of Midlothian soccer teams.
In 1998, after playing his youth career for the Celtic Boys Club, he made his professional debut for the Edinburgh-based Heart of Midlothian F.C.
In 2012, he played on the Scotland U21 national team.
He spent his early days in Glasgow, Scotland.
He and Paul Hartley were teammates on both Heart of Midlothian and Alloa Athletic.