GIS Employee Directory

Professional ServicesLouisiana, United States1001-5000 Employees

G.I.S. (Grand Isle Shipyard, Inc.) operates as a professional services provider serving the oil and gas, power, renewables, and critical infrastructure sectors both in the United States and internationally. Founded in 1948 on Grand Isle, Louisiana, the company evolved from a modest local contractor into a multi-disciplinary organization that supports projects across their entire life cycle, from development through construction, commissioning, and decommissioning. It maintains a nationwide footprint with 21 strategically located facilities and about 20 service lines, enabling it to scale across varied project needs and markets.

Based in Galliano, Louisiana, GIS employs thousands of people and maintains capacity to deliver end-to-end services across development, construction, commissioning, and decommissioning. The firm engages with clients in energy-related sectors and related infrastructure, including recent partnerships such as Argent LNG naming GIS Engineering as its engineering partner. In March 2026, GIS launched a dedicated webpage for its GIS Steel and Supply group, outlining its materials and accessory offerings.

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