Gemellaro Systems Integration®

Security and InvestigationsUnited States501-1000 Employees

At Gemellaro Systems Integration® (GSI), we bring together high-level expertise in network infrastructure and physical security with a rare ability to bridge technology and design. Headquartered in Southeast Michigan and serving clients across North America and globally, we support organizations at every stage of growth—delivering robust solutions tailored for both local sites and global enterprise systems.

We specialize in a wide range of integrated services, including network infrastructure, low voltage systems, specialized networks, building technologies, AV integration, video surveillance, security command centers, and managed services—just a portion of the many systems and platforms we’re experienced in deploying and supporting.

From advanced manufacturing environments and higher education campuses to government institutions, critical infrastructure, and modern commercial and retail developments, our work spans diverse industries—each requiring a unique blend of security, connectivity, and operational efficiency.

Whether acting as a single-source technology provider or collaborating with industry-leading partners across building disciplines, GSI delivers cohesive, forward-thinking solutions designed to perform and scale. We also consult closely with architects, engineers, and end-users—developing and maintaining standards, contributing design insight, and advocating for our clients throughout the project lifecycle.

At the heart of everything we do is a customer-centric commitment to quality, responsiveness, and innovation—ensuring the technology we implement not only performs, but empowers the people and environments it supports.

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