Holger Sindbaek is a Copenhagen-based designer-turned-developer and the owner of World of Card Games. With a background in UI/UX design and expertise in JavaScript, React, and Ruby on Rails, he creates engaging online gaming experiences that blend design and functionality. Before acquiring World of Card Games in 2023, he founded OnlineSolitaire.com, now played over 100,000 times daily. Holger has also co-founded several startups, including Slang, and continues to innovate in the online gaming space by enhancing gameplay and building vibrant player communities.