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Welcome to the GSI Family of Companies

Industry Leading Federal Contractors

For over 15 years, our exemplary past performance has made us the client’s choice for complex projects in Construction, Fuels, Environmental Services, Munitions, Engineering, Professional Services, and Information Technology (IT). The GSI Family of Companies comprises a range of small businesses and SBA 8(a)-certified firms, each offering unique expertise and capabilities to meet our clients' evolving needs. Headquartered in Hawai`i, with offices in Colorado, Washington, New Jersey, Maryland, Guam, and Japan— GSI provides services across the U.S. and the Pacific.

Each GSI company, collectively known as the GSI Family of Companies, is a subsidiary of a Native Hawaiian Organization (NHO) founded to benefit and support the Native Hawaiian community.