[1] He made his cinematic acting debut at the age of twelve, playing Antoine in the 1994 film Cache cash, directed by Claude Pinoteau.

In 1997, he played "Pierrot" in Roger Hanin's film Soleil, starring Sophia Loren, Philippe Noiret and Marianne Sägebrecht.

[2] Wiik's debut stage role was in a 1994 production of Henri de Montherlant's play La Ville dont le prince est un enfant (as the boy Serge Souplier), at the Théâtre Hébertot in Paris.

In 2003 he was the student Loïc in the popular comedy Les Amazones by Jean-Marie Chevret which had a long run at the Théâtre Rive Gauche in Paris (and also filmed for television), and in 2005 and 2007 he took the title role in the second and third revivals of L'Autre by Florian Zeller staged at the Théâtre des Mathurins, Paris.

Then in 2013 he was in the premiere of Mensonges d'états about Operation Fortitude by Xavier Daugreilh, and in a 2018 revival of La Conversation (as Napoléon Bonaparte) by Jean d'Ormesson directed by Alain Sachs.