“I’ve admired Lewis for a long time and tried to sign him at previous clubs, but I wasn’t in a position to afford him.
“He’s consistently impressed us whenever we’ve watched him, but what really stood out was that the numbers backed up exactly what our eyes were telling us.”
Overall, Smith played 81 times for Livingston, scoring 12 goals, seven of them last season, and contributed 12 assists.
“Some of the performance data our recruitment department track placed him among the best wide players in the Premiership last season,” Robinson said.
“We can all overlook what’s right on the doorstep at times. Lewis has proved over several years that he can perform consistently in this league and we believe there is still plenty more to come from him.
“Dons fans can expect an energetic, attack-minded winger who is deceptively quick, works tirelessly for the team, is comfortable with either foot and carries a genuine goal threat.
“He finished as Livingston’s leading league goalscorer last season despite playing predominantly in the wide area, which tells you a lot about the attacking qualities he’ll bring.”
An “excited” Smith pointed out that he had made his Hamilton debut at Pittodrie and believes “I’ve got a lot more to give” for his new club.
Smith, who came through Accies’ youth ranks, signed a two-year contract when moving to West Lothian in 2024, but that was extended until summer 2027 after a season.
Livingston sporting director David Martindale said the sale proved their player trading model was working.
“We signed Lewis on a pre-contract when he was with Hamilton in League 1 and that’s a strategy we’d obviously like to continue going forward,” he told his club website.
“We’re in a good place at the moment and, subject to a Governing Body Endorsement, we’ll be announcing Smithy’s replacement very soon. He was identified early on in anticipation that Lewis could move.”
Smith’s arrival at Pittodrie comes on the same day Aberdeen sold striker Marko Lazetic to Armenian Premier League runners-up Noah for an undisclosed fee.