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Building the Foundation
for Your Innovation

At Mainstay Engineering, we are the bedrock of tech innovation.

Nationally recognized as a leader in civil and structural engineering services, we build the foundation that empowers high-tech and mission critical companies to soar. With our unwavering commitment to precision, quality and excellence, our long-term strategic partnerships with life sciences, semi-conductor, battery, data center and clean energy clients, we provide the essential support and expertise that ensures the best solution for your project.

Trust Mainstay to be your cornerstone.

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PHILADELPHIA OFFICE

50 South 16th Street, Suite 1700

Philadelphia, PA 19102

CORPORATE HEADQUARTERS OFFICE

1750 Walton Road, Suite 200

Blue Bell, PA 19422

RALEIGH OFFICE

9121 Anson Way, Suite 200

Raleigh, NC 27615

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