What software must a structural engineer learn?

For designing of regular buildings ETABS is highly used.

For irregular structures SAP is used.

For foundation design, SAFE is used.

For beams, slabs etc designs and estimation, RCDC is used.

For drafting AutoCAD is used.

For management and interdisciplinary topics like MEP, architectural etc Revit is used.

For bridges Midas is used.

For connections Tekla is used.

Many excel, mathcad, Abaqus, Ansys, Matlab and many other software are also used.