The company was established in Houston as a small technical consultancy.
GSI Environmental grew into an international firm solving environmental puzzles.
From its headquarters in Texas, the company tackles projects across multiple continents.
Renowned for data-driven fieldwork, GSI specializes in groundwater, air, stormwater, and wastewater permitting to support industrial and property development.
Typical projects include complex site investigations, remediation efforts, and environmental permitting for industrial operations and infrastructure.
GSI blends hands‑on engineering with advanced hydrologic and toxicological modeling—especially in aquatic science and PFAS impact analysis.
Its nimble size allows entry into both high‑stakes industrial sites and precise water‑resource modeling, making it a go‑to for regulatory and engineering challenges.
Despite its lean structure, GSI maintains satellite offices across the U.S. and serves clients on four continents, delivering local expertise with global reach.
Culture + Values
Exceptional client service
Technical and regulatory expertise
Ability to lead complex projects typical of larger firms
Flexible work environment with optional remote work
On‑the‑job training, mentorship, and professional development opportunities
Environment + Sustainability
Develops comprehensive GHG inventories covering Scope 1, 2, and 3 emissions following GHG Protocol and ISO 14064‑3 standards
Offers tailored decarbonization strategies and roadmaps with advanced modeling and cost–benefit analyses
Facilitates access to Renewable Energy Certificates and verified carbon offsets to support net‑zero ambitions
Supports clients in setting science‑based targets aligned with the Paris Agreement
Provides life‑cycle analyses and Environmental Product Declarations to quantify environmental impacts
Net‑zero target for operations not explicitly stated on public website
Inclusion & Diversity
No publicly available information regarding DEI strategy or gender statistics on website or LinkedIn