Multidisciplinary architecture and engineering firm serving municipal and institutional markets
ISG is a 501–1,000-person architecture and engineering firm founded in 1973, employee-owned, headquartered in Mankato, MN. The tech stack is heavily weighted toward Autodesk suites (Revit, Civil 3D, AutoCAD, Navisworks, Construction Cloud) plus GIS and surveying tools (ArcGIS, Trimble, Leica, LiDAR), reflecting deep specialization in infrastructure design and permitting workflows. Active hiring is concentrated in engineering (108 open roles) with mid-level seniority dominant, signaling expansion in project delivery capacity rather than leadership gaps.
Notable leadership hires: Survey Crew Chief
ISG operates as a multidisciplinary architecture and engineering practice, serving municipal, educational, and regional development clients. The firm's project portfolio spans water/wastewater systems (stormwater management, treatment plants, distribution infrastructure), transportation and roadway design, civil engineering, and institutional facilities (schools, training facilities). Pain-point signals point to water infrastructure modernization and compliance work as significant business drivers, with recurring challenges around stormwater management, environmental permitting, and funding timelines for public-sector projects. The firm is 100 percent employee-owned.
Autodesk stack (Revit, Civil 3D, AutoCAD, Navisworks, Construction Cloud), ArcGIS, Bluebeam, SketchUp, HydroCAD, WaterCAD, HEC-RAS, and surveying tools including Trimble and Leica.
Current projects include Minnesota State University Mankato hockey training facility, municipal water systems (Clarion water treatment, stormwater plans), roadway and utilities design, and mixed-use developments (Bryk on Broadway, The Quarters in Ames, IA).
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