White's tenure with the Dodgers included stints as director of amateur scouting, assistant GM of scouting, assistant GM of international scouting and, for the past two years, vice president of amateur scouting.
"He'll [White] be involved in pro deals, trades, acquisitions, the Rule 5, our big league club, our prospects and anything involving our big league club," Preller said late Monday. "That will be his main focus."
Preller's relationship with White goes back to Preller's first full-time job in baseball as an assistant in baseball operations for the Dodgers in 2003-04.
White was instrumental in the signing of Cuban outfielder Yasiel Puig, Korean pitcher Hyun-Jin Ryu and pitcher Julio Urias, a highly touted prospect who is from Mexico.
The Padres have said they want to make a push for players on the international market and Preller's background in that area certainly helped his cause in getting the GM job in August.
White shares common traits with Preller's previous hires -- strong talent evaluators who are either coming with a track record (Don Welke, VP of scouting operations) or individuals light on experience whom Preller has identified as having a knack for talent evaluation.
"Logan has a tremendous track record in the game," Preller said in a news release. "The knowledge and experience he brings to our organization strengthens our entire baseball operations staff."
White interviewed for the Padres' GM opening in July, a job that ultimately went to Preller. The Padres currently have an opening for a director of professional scouting, which could be a part of White's duties.
This will be White's second tour of duty with the Padres. He previously served as the team's West Coast scouting supervisor from 1993-95 under then-GM Randy Smith and scouting director Kevin Towers, who then went on to become GM of the team.
Aside from Welke, Preller has hired David Post, formerly of the Astros, to be special assistant to the GM, scouting; Chris Kemp, formerly an area scout for the Rangers, to be director of international scouting; and Sam Geaney, previously the coordinator of international scouting for the A's, to be their director of player development.