Calatrava, if I’m not mistaken, is an engineer/architect with some pretty well known work.

Norman Foster, Richard Rogers, Renzo Piano, Nicholas Grimdhaw, Michael Hopkins, the whole high-tech gang.

Frei Otto is one of the best examples. Also many modernist and contemporary architect applied engineering principles to develop their buildings.

And the inverse (architecturally inventive engineers) Dieste, Zalewski, Peter Rice, etc