At Hearts, Smith was mostly utilised as a right-back – either as a fullback or as a wing-back – however he also deputised as a centre-back (often as the right-most of a back three) when needed.

He signed for Irish League side Ballymena United in January 2009, and made over 100 appearances for them before moving to England to join Bristol Rovers in 2011.

[15] On 12 September 2023, Smith signed for National League South side Yeovil Town on a one-year deal with an option of an additional year.

[16] Following a successful 2023–24 season that saw Yeovil promoted back to the National League as champions,[17] Smith had a one-year contract extension clause triggered.

[18] Smith received his first call-up to the senior Northern Ireland squad on 16 March 2016 for friendlies against Wales and Slovenia.