According to Osho, varna is decided by what one actually does. Engineers and all technicians are shudras (craftsmen); a purely theoretical engineer becomes a brahmin. Doctors who treat patients are shudras; medical researchers are brahmins; those who merely trade medicines are vaishyas. Politicians have no true varna—varna‑sankara—though in a right order, political thinkers would be brahmins and functionaries shudras.
Your place isn’t by title but by what you do: tool-using doers are shudras, idea-and-research people are brahmins, sellers are vaishyas, and today’s power-chasers (politicians) don’t truly fit anywhere.