Harry Kalogirou is a passionate software engineer, game developer, and free software enthusiast based in Larissa, Greece. He is the creator of several notable projects, including the games FlyCraft and Pop Corny, and the EbakusNG blockchain software, which serves as a secure, decentralized database solution. With a strong background in programming, Harry is proficient in languages such as C++, Go, Java, Python, TypeScript, and JavaScript, and has expertise in areas like operating system design, 3D graphics, embedded systems, and Linux kernel development.

Harry has made significant contributions to the Linux kernel, including implementing a TCP/IP stack for 16-bit processors, enabling efficient networking on resource-constrained devices, and developing virtual memory support for CPUs without a Memory Management Unit (MMU), enhancing the kernel's compatibility with low-power and legacy systems.

He is an active contributor to the open-source community, maintaining 39 repositories on GitHub, including projects like Vyper and Picovm. His blog, Thoughts Serializer, is a platform for sharing insights on programming, computer graphics, games, and kernel development, reflecting his professional and creative passions.

Beyond technical pursuits, Harry is involved in the startup ecosystem, serving as a technology advisor at Chronicles Health and building human-centric digital health startups at The Sanguine Lab. He is an angel investor, supporting early-stage startups. His active presence on X (@harkal) shows engagement in discussions on technology, culture, and current events, adding a personal dimension to his professional profile.