What We Do

We specialize in construction & engineering, staffing and defense solutions for leading corporations and governments around the world.

ECM Project Group Photo

Engineering Construction & Maintenance

Day & Zimmermann is a leading provider of engineering, construction, and maintenance services for the power, process, and industrial markets. We deliver complex projects safely, on time, and within budget by leveraging wide-ranging capabilities, long-standing industry experience, innovative technology, and expert project teams

Learn More

munitions can assembly

Munitions

Day & Zimmermann plays a vital role in the defense sector by manufacturing, storing and demilitarizing a wide variety of ammunition products and providing related services to customers in the U.S. government and approved foreign countries


Learn More
drug dog

Government Services

Our Government Services division is a trusted provider of mission support solutions to government customers operating in complex and high threat environments.

Learn More

Workforce Solutions

Yoh is Day & Zimmermann's workforce solutions company and helps customers establish and efficientstrategic talent supply chain to address the complexities of managing cost, risk, quality and value of the entire workforce.

Learn More

Diversity & Inclusion at Day & Zimmermann

Our Diversity Vision

To be a company that embraces diversity, is inclusive, and thrives on learning so that our employees feel respected and invited to contribute to the success of our company, clients, suppliers and communities.

Learn More

We are Many, Diverse Voices of Betterment

Our People

The best way to learn about life at Day & Zimmermann is to hear from the people who are living it. Meet the people behind our success.

Learn More About Life at D&Z

“I am excited to be part of an amazing organization and work with colleagues who share the same values as I have.”

HEATHER, CORPORATE COMMUNICATIONS MANAGER

Find Job Opportunities at Day & Zimmermann