GAI Consultants

Highly Engaged Employees

GAI Consultants, established in 1958, is a premier engineering, planning, and environmental services firm. Originally founded by Carnegie Mellon University engineering graduates, the company has evolved from a foundation engineering specialist into a diversified national provider. GAI Consultants serves industrial and energy clients, offering comprehensive technical support, regulatory compliance, and environmental expertise. The firm’s long-standing reputation is built on delivering high-level design and concept planning for complex infrastructure projects across the United States.

Operating with 1,000-5,000 employees across 32 locations, the firm maintains a robust national footprint that facilitates localized project management. Their organizational structure supports complex project delivery, ranging from urban development and transportation planning to environmental remediation and waste water treatment. Meet GAI Consultants' team to learn about their leadership, the diverse technical staff, and the specialized engineering professionals driving their operational success. The firm leverages its extensive in-house design capabilities to ensure quality control and project efficiency.

The firm’s service portfolio includes environmental consulting, water treatment facility design, and large-scale program management. GAI Consultants distinguishes itself through advanced computer modeling, mapping, and cultural resource management, which sets them apart from traditional engineering firms. Competing against industry peers like Pennoni, Brown and Caldwell, and SCS Engineers, GAI maintains a strong market position by integrating technical innovation with sustainable practices. With $274.3M in annual revenue, the company continues to expand its influence in the U.S. infrastructure sector, consistently adapting to evolving environmental regulations and urban growth demands.