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.
We want to make sure that whoever makes our team really makes our team by earning it and not putting them in situations where they get preference because of their status as a first-round pick or whatever it might be. That's not going to happen. Everybody has to earn their way on our team.
— Columbus Blue Jackets general manager Jarmo Kekalainen on the team's prospects at development camp