Engineering carries historically high international mobility because the toolkit is universal: ISO, IEC, NEC, Eurocode, and ASTM standards cross borders, calculation software is the same in any country, and technical vocabulary rarely needs translation. Whoever masters their subfield's standards already speaks half the interview. The entry barrier is not technical, it is regulatory: local professional registration (P.Eng in Canada, Chartered Engineer in the United Kingdom, IngREV in several European countries) decides whether the engineer signs the project or only executes it.
The anchor careers are civil, mechanical, electrical, chemical, environmental engineering, and the emerging energy engineering family (wind, solar, batteries, hydrogen). Hubs like the Netherlands, Germany, Canada, Australia, the United Arab Emirates, and Singapore maintain recurring sponsorship lines for infrastructure, clean energy, semiconductor, and Industry 4.0 projects. Each hub favors a different profile, and the wrong hub choice usually costs more than the lack of English.