Meet Our Technical Leaders

Our Global Senior Principals have been acknowledged, rewarded and empowered to deliver high quality project and service outcomes for our clients around the world through our Technical Excellence Program. Read more about their achievements and impacts.
Photo of Michael Bilney
Michael Bilney
Global Senior Principal - Asset Management and Resilience
Photo of Gretchen Thach
Gretchen Thach
Global Senior Principal - Environmental Services
Photo of Chris Kline
Chris Kline
Global Senior Principal - Sustainability & ESG
Photo of Thomas Nogaj
Thomas Nogaj
Global Senior Principal - Water / Wastewater
Photo of Pierre Hartzenberg
Pierre Hartzenberg
Global Senior Principal - Geospatial / Information Management

Our clients also benefit from the leading expertise of our Regional Senior Principals. Discover more here.