Construction Manager Internship

About the Company

Sentry is a full‑service general contractor and design‑build firm headquartered in Watertown, South Dakota, that leads projects from concept to completion by self‑performing critical trades such as mechanical, electrical, plumbing, structural steel erection, and crane operations. The company’s in‑house teams also deliver custom fabrication, trucking, field service, and advanced control systems, supported by an owned manufacturing facility that enables rapid, tailored solutions. Operating across the Midwest—including South Dakota, North Dakota, Minnesota, Iowa, Nebraska, and Wyoming—Sentry serves commercial, industrial, municipal, and infrastructure clients, ranging from wastewater treatment plants to specialty shop‑built systems. Its distinctive combination of hands‑on execution, integrated design‑build expertise, and a culture that prioritizes teamwork, accountability, and continuous growth sets it apart in the construction industry.

Job Description