Assist with and monitor case initiations and extensions of US non immigrant and immigrant visas (H 1B, L 1A/B, O 1, TN, E 3, F 1, PERM [EB 1A/B/C], I 140, AOS etc.). Act as a liaison with employees, managers, directors, human resources, global mobility, and talent acquisition to process visa transfers, extensions, change of status requests, and US permanent residency (gre