Former Tetra Tech Business Unit President Joins Apex

Rockville, MD—Apex Companies, LLC—a leading water resources, environmental services, and industrial hygiene & safety firm—welcomes Darwin Nelson as their new Chief Operating Officer (COO).

Darwin brings three decades of experience in operational leadership, organizational effectiveness, and strategic growth to Apex. As COO, he will lead the company’s nationwide business operations across multiple geographies, end markets, and service areas. In addition to ensuring that Apex continues to operate in a highly effective, safe, and efficient manner, he will align the company’s people, processes, and culture to deliver exceptional client satisfaction and sustainable growth.

Prior to Apex, Darwin served as President of Tetra Tech AEG and previously as President of CDM Smith’s North America Unit where he led daily business operations, improved operational processes, optimized talent and directed integrated growth strategies. A registered Professional Engineer with a Bachelor of Engineering degree in Civil Engineering, his expertise spans several markets including water, environmental, solid waste, energy, infrastructure, construction, and international development.

“Darwin brings a unique and invaluable skillset to Apex as his effectiveness leading people and optimizing business processes are as impressive as his track record facilitating strategic growth,” said David Fabianski, Apex CEO. “The intersection of people, process and pace is where we continue to differentiate ourselves as a mid-market leader in environmental services and Darwin’s signature strengths will help us continue to deliver excellence to our clients, while enhancing our culture and competitive standing.”

Go to top