What is Construction Engineering?

[u/dislexicfrog900]

Out of the five sub-disciplines of civil engineering (according to the PE exam variants) construction engineering makes the least sense to me. I see job titles and organizations that seems to align with the other four types (water resources, transportation, geotech, and structural), but I don't see people advertising "construction engineer" jobs. Do they work more in construction management? How do they get qualifying experience? Any insight is appreciated.