Björn "Beorn" Rabenstein is a Principal Software Engineer at Grafana Labs, primarily working on Prometheus, where he contributes to the external project and consults on its internal usage. Based in Berlin, Germany, Björn is known for disregarding daylight saving time. His open-source contributions are mostly for Prometheus, where he is a significant contributor. In his free time, he enjoys board games among various hobbies. Björn prefers silence while coding, as he finds music too absorbing to listen to while working. On GitHub, he can be found under the handle beorn7, and he humorously dismisses Twitter by questioning its existence. He delegates the decision of using spaces or tabs in coding to the formatting tool "go fmt."