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.

Michael Bilney
Global Senior Principal - Asset Management and Resilience

Gretchen Thach
Global Senior Principal - Environmental Services

Chris Kline
Global Senior Principal - Sustainability & ESG

Thomas Nogaj
Global Senior Principal - Water / Wastewater

Pierre Hartzenberg
Global Senior Principal - Geospatial / Information Management
Our clients also benefit from the leading expertise of our Regional Senior Principals. Discover more here.