Designing Tomorrow’s World Today Engineering Excellence

We take a collaborative approach, working with clients and communities to design and develop infrastructure projects that are critically important for people. Together, we create the infrastructure people need most.

Who We Are
Winona Leaman,
Vice President/Director of 
Business Development
For 23 years, the most satisfying parts of my experience at GPI are the relationships I’ve built, the opportunities I’ve had to grow, and knowing that my efforts have been valued. I genuinely care about GPI's success, and it’s incredibly rewarding to feel that the commitment I’ve given to the company has been returned.

Employee Focused

Fostering a purpose-driven workplace

Our core philosophy is that our people are our greatest asset. Prioritizing our staff’s growth, well-being, and professional development creates an environment where they can thrive and contribute their best to the firm and our clients.

Join Our Team

#83
ENR Top 500 Design Firms
2025 ENR Top 100 logo
#71
ENR Top 100 Pure Designers
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#68
Top 100 MEP Giants Consulting-Specifiying Engineer
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