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202 S. 1st Avenue, Suite 205, Yuma, AZ 85364
John Sternitzke

John Sternitzke, PE, FPE, CXA

FOUNDER, ENGINEER

Sternco’s founder and firm principal is a registered mechanical engineer in Arizona and California and also holds the QCxP accreditation from UW Madison and the CxA certification from the AABC Commissioning Group.

John wears many hats at Sternco, but is primarily involved in the design of mechanical, plumbing, fire sprinkler, and related systems and is the firm’s Commissioning Authority (CxA).

Matthew Larson

MATTHEW LARSON

PE | QCxP | LEED AP

Sara Larson

SARA LARSON

AIA | QCxP | LEED AP

Carlos Lopez

CARLOS LOPEZ

Mechanical Designer | EIT | QCxP

Mario Pitotti

MARIO PITOTTI

Mechanical & Piping Designer

Kathleen Dolan

KATHLEEN DOLAN

Architectural Technician

Tim Locklear

TIM LOCKLEAR

Electrical Design Engineer

JEFF WILLIAMS

Mechanical Designer | EIT | QCxP

David Watson

DAVID WATSON

Electrical Engineer | PE

DESTINY ZAMORA

Mechanical Designer

JEDIDIAH WARD

Electrical Designer | EIT

LINA LOPEZ

Office Administrator

Susan Sternitzke

SUSAN STERNITZKE

CFO