[2] Rosales initially worked with Swiss engineer and bridge designer Christian Menn,[3] and from 1988 to 1996, Rosales served as the lead architect and urban designer for the Leonard P. Zakim Bunker Hill Bridge over the Charles River.

[4] This structure is part of the Central Artery/Tunnel Project, informally called "The Big Dig".

[5] During his tenure at this project, he mainly focused in improving the appearance of the highways and bridges as part of the project that helped transformed downtown Boston by removing an elevated highway and by opening access to the harbor.

[6] In 1997, he started his own independent architecture and engineering professional practice, Rosales + Partners, in Boston.

[10][11] Rosales lives on Mount Vernon Street in the historic Beacon Hill neighborhood of Boston.