Worked as a web developer at various companies. The specific companies and exact dates are less publicly known, but this experience provided him with practical programming skills and a deeper understanding of software development.

Worked as a game developer at Midasplayer AB (later known as King, the creators of Candy Crush Saga). He developed Flash games, honing his skills in game design and development within a professional environment.

Worked as a programmer at jAlbum, a web album software company. During this time, he was also developing Minecraft as a side project.