Oleksuk had 19 goals and 21 assists in 74 games last season with Worcester of the AHL.
The Sharks also announced Friday that former forward Niklas Sundstrom has been hired as a European scout and several other changes to the front office.
Mike Ricci will work on the development of the team's forwards throughout the organization and Bryan Marchment will have a similar role for defencemen. Scout Dirk Graham will also work in the player development process with an emphasis on leadership and character development.
It's cool when you think about how many great American players have played the game and the two players that were at that 18-game point streak and what they've done in their careers. It's pretty cool right now, but it was kind of overshadowed by the loss.
— Blackhawks forward Patrick Kane after breaking the record for longest point streak by an American-born player with a goal and an assist in a 3-2 overtime loss against the Kings