With over 50 years in business, we have earned our reputation as one of the leading engineering companies in the United States. GPI has been consistently ranked in Engineering News Record’s Top Design Firms and we have earned recognition by our clients through our award-winning projects. It is our people who make the difference by being committed to our values of teamwork, quality, and commitment. We constantly educate ourselves and our clients on the newest and most efficient technologies in the industry. Our commitment to sustainability is demonstrated through the design of our own LEED Platinum Certified office in Rockville, MD, the first engineering firm in the state of Maryland to achieve the highest level of LEED certification.