Secretary for Transport and Public Works of the Macao SAR (20 December 2014 – 19 December 2024), the infrastructure chief of Fernando Chui Sai On's second term and Ho Iat Seng's cabinet. Born in August 1956 in Portuguese Macau, a Macanese, he holds a civil-engineering degree from the University of Porto and completed a postgraduate programme in soil mechanics at the Universidade Nova de Lisboa. He joined the civil service in 1979 and served the Portuguese administration until 1990 as technician, department head, deputy secretary, and Secretary of the Secretariat for Transport and Public Works; he was a Legislative Assembly member from 1992 to 1999. From 1999 to 2014 he headed the Macao Economic and Trade Offices in Lisbon, in Brussels (EU), and in Geneva (WTO). As Secretary for Transport and Public Works from December 2014 he oversaw land, urban planning, housing, transport, public works, and public utilities for ten years. He also served on the Basic Law Drafting Committee and the SAR Preparatory Committee.

From the University of Porto's civil-engineering lecture halls, through the Portuguese administration's Transport and Public Works secretariat, to the SAR's land, urban-planning, housing, and public-works machine — Raimundo Arrais do Rosário is one of the few Macanese principal officials to bridge the Portuguese and SAR eras, running Transport and Public Works for ten years with a reputation for blunt, pragmatic, engineer's candour.