John Carmack, renowned for co-founding id Software and creating iconic video games like Doom, has made significant contributions to virtual reality technology as Oculus VR's CTO for almost a decade. At Oculus, he played a pivotal role in developing groundbreaking VR systems and software, pushing the boundaries of immersive experiences.

Carmack's expertise in 3D graphics and game development, as well as his innovations, such as advanced rendering techniques and optimization algorithms, greatly improved VR performance and user experience. His work at Oculus not only elevated the quality of VR gaming but also helped to revolutionize the gaming industry and laid the groundwork for more immersive experiences in XR.