Guru
Noun · Hacker Culture
Definitions
An informal term for someone seen as unusually knowledgeable or influential in a subject area. In tech culture it can be flattering, ironic, or critical depending on whether the person is genuinely helpful or treated with too much unquestioned reverence.
In plain English: Someone seen as a highly knowledgeable expert.
Example: "He knew people called him the Kubernetes guru, but he preferred writing better docs to being summoned as the only person who could fix everything."