Kocaman’s set and costume designs have been featured in major international theaters and touring productions across Germany and Turkey. His work has contributed to award-winning productions, including Dschins at Maxim Gorki Theater in Berlin, which received the Friedrich-Luft-Preis 2023 for "Best Play of the Year," and Dunkel Lockende Welt at Werk-X in Vienna, which was honored with the NESTROY Prize 2020 for "Best Off-Production."

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Other notable productions include So Weit Weg-Tevafuk at Theater Osnabrück, Istanbul – Ein Liederabend at Ballhaus Prinzenallee in Berlin, Anziehungskräfte at Tak Theater Berlin, Acht at Urania Theater in Cologne, Tod Eines Superhelden at Ballhaus Naunynstraße in Berlin, and Gog-Magog Part 4 at Theaterdiscounter Berlin.

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Additionally, he worked as a scenographer for the Art Festival at Atelier Gardens in Berlin. Kocaman’s designs combine powerful visual storytelling with character and theme, creating immersive worlds that bring each production to life.