The (STEM)[superscript 2] Network (Sustainable, Transformative Engagement across a Multi-Institution/Multidisciplinary STEM Network) is a National Science Foundation Research Coordination Network-Undergraduate Biology Education funded project intended to bridge disciplinary and institutional silos that function as barriers to systemic change in science, technology, engineering, and mathematics (STEM) in higher education. We utilized three foundational frameworks to develop an adaptable model that we posit is applicable across contexts. The model includes a core infrastructure that, combined with intentional self-reflection, results in an adaptable design that can be tailored to individual institutions, contexts, and goals. Herein, we describe the inception of the network, the foundational theoretical frameworks that guide network development and growth, and detail network structure and operations with the intention of supporting others in creating their own networks. We share the nuts and bolts of how we developed the (STEM)[superscript 2] Network, and include a supplemental network development planning guide to support others in utilizing the (STEM)[superscript 2] Network model to reach their own objectives.