Leadership Team

We’re invested in growing our business and developing our employees

At Global Facility Solutions (GFS), our success is driven by a leadership team with extensive experience, diverse expertise, and a shared commitment to delivering exceptional results for our clients. Our leaders foster a culture of innovation, collaboration, and continuous improvement, ensuring that we remain at the forefront of the energy, engineering, and sustainability services industry.

Meet the Team

R-Calloway-Headshot

Robert Calloway, PE, CxA

President

MEP Engineering Team

Justin Tunzi, PE

Associate Director, Engineering

Michael Gorham

Sr. Mechanical Engineer

Thomas Pilarz, EIT

Energy Engineer

Jackson Rivenburgh

Energy Engineer

Jeffrey Young

Mechanical Engineer

Sustainability Team

Carol Parker

Sustainability Program Director

Jennifer Anderson, LEED GA, RPA

Associate Director, Corporate Sustainability

Emily Wallace, LEED GA

Sr. Sustainability Analyst

Erin Boyle

Sustainability Analyst

Erin Lamich

Sustainability Analyst

Special Projects

William Richter

Project Manager

Office Management

Samantha Warnick

Office Manager/Accounting