After spells at Glasgow Caledonians, Watsonians and Brive, Smith made his Northampton debut on 1 September 2001.
BBC: Ex-Lions prop Smith set to retire
2.
And he follows Watsonians' Stuart McInally, the number eight with whom he helps form a voracious back-row in the Scotland Under-20 side, in signing with Edinburgh for next season.
BBC: James King and Dave Denton win Edinburgh contracts