Who's Who in the IT "City" (Industry Roles)
A map of the IT professions: frontend, backend, fullstack, mobile, QA, DevOps, DBA, Security, UI/UX, PM — each role with its own zone of responsibility. Why: so everything you learn finds its place on the map, and you consciously choose where to go deep — a solo developer wears all these "hats" in turn, so you need to recognize all of them. When: planning a curriculum, job-hunting, reading a job title ("what does a DevOps engineer actually do"), hiring someone. How: roles split by LAYER (client / server / data / infra) and by FUNCTION (builder / checker / organizer). Where: every company and project; in your own Samevian right now, every one of these roles is one person — you. Who: you, as "all-in-one" today; later, the people you'll collaborate with or hire.