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

John Sternitzke, P.E.

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 AAC/AAAB.

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

Matthew Larson

MATTHEW LARSON, P.E.

P.E. | QCxP | LEED AP

Sara Larson

SARA LARSON

AIA | ACxP | LEED AP

Carlos Lopez

CARLOS LOPEZ

Mechanical Engineer, QCxP

Mario Pitotti

MARIO PITOTTI

Mechanical & Piping Design

Kathleen Dolan

KATHLEEN DOLAN

Architectural Tech

Tim Locklear

TIM LOCKLEAR

Electrical Design Engineer

JEFF WILLIAMS

Commissioning Engineer | QCxP

David Watson

DAVID WATSON

Electrical Engineer

DESTINY ZAMORA

Mechanical Engineer

JEDIDIAH WARD

E.I.T. | Electrical Engineer

LINA LOPEZ

Office Administrator

Susan Sternitzke

SUSAN STERNITZKE

CFO