Olczyk was a professional scout for the Toronto Maple Leafs last season. Prior to that, he spent four seasons as assistant GM of the Carolina Hurricanes, where he worked under Seattle GM Ron Francis.
"Being part of this franchise from the very beginning and truly building the organization from the ground up is an incredible opportunity," Olczyk said. "I am thrilled to join NHL Seattle and to rejoin Ron Francis."
The 49-year-old, who is the brother of NHL on NBC analyst and U.S. Hockey Hall of Fame forward Eddie Olczyk, will manage the salary cap and contracts, oversee player transactions, and advise Francis as part of the scouting department.