Driving innovation through collaboration & diversification

Meet Our Dynamic Team

  • Clear Filters
Philip Ciesielski, PE
Lead
Rodney Ranzenberger, AIA, LEED AP
Lead | Architecture
Ryan Hagerty, PE
Associate | Bridge
Sam Tapko
Project Lead | Roadways
Scott Grier
Corporate Attorney
  • GBA Companies Corporate Services
Scott Medeiros
Director | Business Development - National
  • George Butler Associates
Sean Baxter, PE
Senior Engineer | Bridge
Steve Spiegel
Director | Process Engineering
Terri Quintana
Senior Lead
Todd Trotter
Senior Associate | Environmental
Zach Sperry, PE
Lead | Business Development - Texas
  • George Butler Associates
Careers at GBA
It’s More Than Just A Job
GBA is a place where passionate, ambitious people come to learn & grow.
Explore Opportunities
Contact Us
Let’s Create Something Remarkable Together
We will bring the complete team to meet your needs and move your project forward. Contact GBA today.
Reach Out