For inquiries about the GSI Family of Companies, including contract opportunities or how we can support your project needs, please email info@gsisg.com.

For employment opportunities, please visit our CAREERS page.

Corporate Headquarters - Honolulu

GSI Service Group, Inc.
181 South Kukui Street, Second Floor
Honolulu, Hawai`i 96813

Phone:
(808) 834-4631

Fax:
(808) 356-0900

Email:
info@gsisg.com

Other Office Locations


Kapolei, Hawai`i
Boulder, Colorado
Dupont, Washington
Flemington, New Jersey
Belcamp, Maryland
Pensacola, Florida
Dededo, Guam
Yokosuka, Japan