Technology travels well around the world because the toolkit is universal: Git, Linux, containers, REST and gRPC standards work the same in any hub. Titles also travel (no need to recreate a local certification to be recognized as a Software Engineer, Data Engineer, SRE, or Security Engineer). Hubs with critical mass of international openings include the Bay Area, Seattle, New York, Dublin, Amsterdam, Berlin, London, Singapore, Tel Aviv, and Bangalore. The sector's anchor careers (software engineering, data engineering, infrastructure and SRE, applied security, applied machine learning, and technical product design) have open sponsorship pipelines in most of these cities.
What matters for whoever decides to emigrate in this career is real seniority (3 to 5 years to enter as mid, 6 or more for sr), named specialization (not "I know a bit of everything," but "distributed backend with Go," "production MLE with PyTorch," "platform SRE with Kubernetes at scale"), and written English dense enough to defend design docs and trade-offs in async meetings. Whoever arrives sr+ with a concrete scale problem solved gets in fast. The narrower doors are for the generalist junior, the full-stack without vertical depth, and the support profile who learned to code late.