Most marketers run campaigns. Most engineers build products. I sit at the intersection — the person who can architect the data layer, run the paid media, and ship the web infrastructure that ties it all together. I can brief a brand redesign and build the attribution model to measure it. Scope a full-funnel media strategy and own the technical implementation end-to-end. That combination is uncommon. Most organizations hire three people to approximate it. The results tend to show the difference.