What is minecraft dev alex?

"Minecraft dev Alex" likely refers to Alex Puckhaber, a game developer who worked on the popular video game Minecraft. Alex started working on Minecraft in 2012 and was responsible for programming the game's server software, among other tasks. He later became a software engineer at Mojang, the company that developed Minecraft. Alex's role in Minecraft's development has made him a well-known figure in the gaming community.